diff --git a/src/execution/collectFields.ts b/src/execution/collectFields.ts
index d1916867d6..51f434f0b6 100644
--- a/src/execution/collectFields.ts
+++ b/src/execution/collectFields.ts
@@ -1,5 +1,6 @@
 import { AccumulatorMap } from '../jsutils/AccumulatorMap.js';
 import { invariant } from '../jsutils/invariant.js';
+import { mapValue } from '../jsutils/mapValue.js';
 import type { ObjMap } from '../jsutils/ObjMap.js';
 
 import type {
@@ -25,6 +26,7 @@ import type { GraphQLSchema } from '../type/schema.js';
 import { typeFromAST } from '../utilities/typeFromAST.js';
 
 import type { GraphQLVariableSignature } from './getVariableSignature.js';
+import type { VariableValues } from './values.js';
 import { experimentalGetArgumentValues, getDirectiveValues } from './values.js';
 
 export interface DeferUsage {
@@ -32,15 +34,10 @@ export interface DeferUsage {
   parentDeferUsage: DeferUsage | undefined;
 }
 
-export interface FragmentVariables {
-  signatures: ObjMap<GraphQLVariableSignature>;
-  values: ObjMap<unknown>;
-}
-
 export interface FieldDetails {
   node: FieldNode;
   deferUsage?: DeferUsage | undefined;
-  fragmentVariables?: FragmentVariables | undefined;
+  fragmentVariableValues?: VariableValues | undefined;
 }
 
 export type FieldGroup = ReadonlyArray<FieldDetails>;
@@ -55,7 +52,7 @@ export interface FragmentDetails {
 interface CollectFieldsContext {
   schema: GraphQLSchema;
   fragments: ObjMap<FragmentDetails>;
-  variableValues: { [variable: string]: unknown };
+  variableValues: VariableValues;
   operation: OperationDefinitionNode;
   runtimeType: GraphQLObjectType;
   visitedFragmentNames: Set<string>;
@@ -73,7 +70,7 @@ interface CollectFieldsContext {
 export function collectFields(
   schema: GraphQLSchema,
   fragments: ObjMap<FragmentDetails>,
-  variableValues: { [variable: string]: unknown },
+  variableValues: VariableValues,
   runtimeType: GraphQLObjectType,
   operation: OperationDefinitionNode,
 ): {
@@ -114,7 +111,7 @@ export function collectFields(
 export function collectSubfields(
   schema: GraphQLSchema,
   fragments: ObjMap<FragmentDetails>,
-  variableValues: { [variable: string]: unknown },
+  variableValues: VariableValues,
   operation: OperationDefinitionNode,
   returnType: GraphQLObjectType,
   fieldGroup: FieldGroup,
@@ -136,14 +133,14 @@ export function collectSubfields(
   for (const fieldDetail of fieldGroup) {
     const selectionSet = fieldDetail.node.selectionSet;
     if (selectionSet) {
-      const { deferUsage, fragmentVariables } = fieldDetail;
+      const { deferUsage, fragmentVariableValues } = fieldDetail;
       collectFieldsImpl(
         context,
         selectionSet,
         subGroupedFieldSet,
         newDeferUsages,
         deferUsage,
-        fragmentVariables,
+        fragmentVariableValues,
       );
     }
   }
@@ -161,7 +158,7 @@ function collectFieldsImpl(
   groupedFieldSet: AccumulatorMap<string, FieldDetails>,
   newDeferUsages: Array<DeferUsage>,
   deferUsage?: DeferUsage,
-  fragmentVariables?: FragmentVariables,
+  fragmentVariableValues?: VariableValues,
 ): void {
   const {
     schema,
@@ -175,19 +172,25 @@ function collectFieldsImpl(
   for (const selection of selectionSet.selections) {
     switch (selection.kind) {
       case Kind.FIELD: {
-        if (!shouldIncludeNode(selection, variableValues, fragmentVariables)) {
+        if (
+          !shouldIncludeNode(selection, variableValues, fragmentVariableValues)
+        ) {
           continue;
         }
         groupedFieldSet.add(getFieldEntryKey(selection), {
           node: selection,
           deferUsage,
-          fragmentVariables,
+          fragmentVariableValues,
         });
         break;
       }
       case Kind.INLINE_FRAGMENT: {
         if (
-          !shouldIncludeNode(selection, variableValues, fragmentVariables) ||
+          !shouldIncludeNode(
+            selection,
+            variableValues,
+            fragmentVariableValues,
+          ) ||
           !doesFragmentConditionMatch(schema, selection, runtimeType)
         ) {
           continue;
@@ -196,7 +199,7 @@ function collectFieldsImpl(
         const newDeferUsage = getDeferUsage(
           operation,
           variableValues,
-          fragmentVariables,
+          fragmentVariableValues,
           selection,
           deferUsage,
         );
@@ -208,7 +211,7 @@ function collectFieldsImpl(
             groupedFieldSet,
             newDeferUsages,
             deferUsage,
-            fragmentVariables,
+            fragmentVariableValues,
           );
         } else {
           newDeferUsages.push(newDeferUsage);
@@ -218,7 +221,7 @@ function collectFieldsImpl(
             groupedFieldSet,
             newDeferUsages,
             newDeferUsage,
-            fragmentVariables,
+            fragmentVariableValues,
           );
         }
 
@@ -230,7 +233,7 @@ function collectFieldsImpl(
         const newDeferUsage = getDeferUsage(
           operation,
           variableValues,
-          fragmentVariables,
+          fragmentVariableValues,
           selection,
           deferUsage,
         );
@@ -238,7 +241,11 @@ function collectFieldsImpl(
         if (
           !newDeferUsage &&
           (visitedFragmentNames.has(fragName) ||
-            !shouldIncludeNode(selection, variableValues, fragmentVariables))
+            !shouldIncludeNode(
+              selection,
+              variableValues,
+              fragmentVariableValues,
+            ))
         ) {
           continue;
         }
@@ -252,15 +259,20 @@ function collectFieldsImpl(
         }
 
         const fragmentVariableSignatures = fragment.variableSignatures;
-        let newFragmentVariables: FragmentVariables | undefined;
+        let newFragmentVariableValues: VariableValues | undefined;
         if (fragmentVariableSignatures) {
-          newFragmentVariables = {
-            signatures: fragmentVariableSignatures,
-            values: experimentalGetArgumentValues(
+          newFragmentVariableValues = {
+            sources: mapValue(fragmentVariableSignatures, (varSignature) => ({
+              signature: varSignature,
+              value: fragmentVariableValues?.sources[varSignature.name]
+                ? fragmentVariableValues.coerced[varSignature.name]
+                : variableValues.coerced[varSignature.name],
+            })),
+            coerced: experimentalGetArgumentValues(
               selection,
               Object.values(fragmentVariableSignatures),
               variableValues,
-              fragmentVariables,
+              fragmentVariableValues,
             ),
           };
         }
@@ -273,7 +285,7 @@ function collectFieldsImpl(
             groupedFieldSet,
             newDeferUsages,
             deferUsage,
-            newFragmentVariables,
+            newFragmentVariableValues,
           );
         } else {
           newDeferUsages.push(newDeferUsage);
@@ -283,7 +295,7 @@ function collectFieldsImpl(
             groupedFieldSet,
             newDeferUsages,
             newDeferUsage,
-            newFragmentVariables,
+            newFragmentVariableValues,
           );
         }
         break;
@@ -299,8 +311,8 @@ function collectFieldsImpl(
  */
 function getDeferUsage(
   operation: OperationDefinitionNode,
-  variableValues: { [variable: string]: unknown },
-  fragmentVariables: FragmentVariables | undefined,
+  variableValues: VariableValues,
+  fragmentVariableValues: VariableValues | undefined,
   node: FragmentSpreadNode | InlineFragmentNode,
   parentDeferUsage: DeferUsage | undefined,
 ): DeferUsage | undefined {
@@ -308,7 +320,7 @@ function getDeferUsage(
     GraphQLDeferDirective,
     node,
     variableValues,
-    fragmentVariables,
+    fragmentVariableValues,
   );
 
   if (!defer) {
@@ -336,14 +348,14 @@ function getDeferUsage(
  */
 function shouldIncludeNode(
   node: FragmentSpreadNode | FieldNode | InlineFragmentNode,
-  variableValues: { [variable: string]: unknown },
-  fragmentVariables: FragmentVariables | undefined,
+  variableValues: VariableValues,
+  fragmentVariableValues: VariableValues | undefined,
 ): boolean {
   const skip = getDirectiveValues(
     GraphQLSkipDirective,
     node,
     variableValues,
-    fragmentVariables,
+    fragmentVariableValues,
   );
   if (skip?.if === true) {
     return false;
@@ -353,7 +365,7 @@ function shouldIncludeNode(
     GraphQLIncludeDirective,
     node,
     variableValues,
-    fragmentVariables,
+    fragmentVariableValues,
   );
   if (include?.if === false) {
     return false;
diff --git a/src/execution/execute.ts b/src/execution/execute.ts
index 782fda7537..404d267411 100644
--- a/src/execution/execute.ts
+++ b/src/execution/execute.ts
@@ -75,6 +75,7 @@ import type {
   StreamRecord,
 } from './types.js';
 import { DeferredFragmentRecord } from './types.js';
+import type { VariableValues } from './values.js';
 import {
   experimentalGetArgumentValues,
   getArgumentValues,
@@ -139,7 +140,7 @@ export interface ExecutionContext {
   rootValue: unknown;
   contextValue: unknown;
   operation: OperationDefinitionNode;
-  variableValues: { [variable: string]: unknown };
+  variableValues: VariableValues;
   fieldResolver: GraphQLFieldResolver<any, any>;
   typeResolver: GraphQLTypeResolver<any, any>;
   subscribeFieldResolver: GraphQLFieldResolver<any, any>;
@@ -510,15 +511,15 @@ export function buildExecutionContext(
   /* c8 ignore next */
   const variableDefinitions = operation.variableDefinitions ?? [];
 
-  const coercedVariableValues = getVariableValues(
+  const variableValuesOrErrors = getVariableValues(
     schema,
     variableDefinitions,
     rawVariableValues ?? {},
     { maxErrors: 50 },
   );
 
-  if (coercedVariableValues.errors) {
-    return coercedVariableValues.errors;
+  if (variableValuesOrErrors.errors) {
+    return variableValuesOrErrors.errors;
   }
 
   return {
@@ -527,7 +528,7 @@ export function buildExecutionContext(
     rootValue,
     contextValue,
     operation,
-    variableValues: coercedVariableValues.coerced,
+    variableValues: variableValuesOrErrors.variableValues,
     fieldResolver: fieldResolver ?? defaultFieldResolver,
     typeResolver: typeResolver ?? defaultTypeResolver,
     subscribeFieldResolver: subscribeFieldResolver ?? defaultFieldResolver,
@@ -753,7 +754,7 @@ function executeField(
       fieldGroup[0].node,
       fieldDef.args,
       exeContext.variableValues,
-      fieldGroup[0].fragmentVariables,
+      fieldGroup[0].fragmentVariableValues,
     );
 
     // The resolve function's optional third argument is a context value that
@@ -842,7 +843,7 @@ export function buildResolveInfo(
     ),
     rootValue: exeContext.rootValue,
     operation: exeContext.operation,
-    variableValues: exeContext.variableValues,
+    variableValues: exeContext.variableValues.coerced,
   };
 }
 
@@ -1062,7 +1063,7 @@ function getStreamUsage(
     GraphQLStreamDirective,
     fieldGroup[0].node,
     exeContext.variableValues,
-    fieldGroup[0].fragmentVariables,
+    fieldGroup[0].fragmentVariableValues,
   );
 
   if (!stream) {
@@ -1091,7 +1092,7 @@ function getStreamUsage(
   const streamedFieldGroup: FieldGroup = fieldGroup.map((fieldDetails) => ({
     node: fieldDetails.node,
     deferUsage: undefined,
-    fragmentVariables: fieldDetails.fragmentVariables,
+    fragmentVariables: fieldDetails.fragmentVariableValues,
   }));
 
   const streamUsage = {
diff --git a/src/execution/values.ts b/src/execution/values.ts
index 5ac0c7656c..d078b9b71a 100644
--- a/src/execution/values.ts
+++ b/src/execution/values.ts
@@ -1,6 +1,6 @@
 import { inspect } from '../jsutils/inspect.js';
 import type { Maybe } from '../jsutils/Maybe.js';
-import type { ObjMap } from '../jsutils/ObjMap.js';
+import type { ObjMap, ReadOnlyObjMap } from '../jsutils/ObjMap.js';
 import { printPathArray } from '../jsutils/printPathArray.js';
 
 import { GraphQLError } from '../error/GraphQLError.js';
@@ -25,13 +25,22 @@ import {
   coerceInputValue,
 } from '../utilities/coerceInputValue.js';
 
-import type { FragmentVariables } from './collectFields.js';
 import type { GraphQLVariableSignature } from './getVariableSignature.js';
 import { getVariableSignature } from './getVariableSignature.js';
 
-type CoercedVariableValues =
-  | { errors: ReadonlyArray<GraphQLError>; coerced?: never }
-  | { coerced: { [variable: string]: unknown }; errors?: never };
+export interface VariableValues {
+  readonly sources: ReadOnlyObjMap<VariableValueSource>;
+  readonly coerced: ReadOnlyObjMap<unknown>;
+}
+
+interface VariableValueSource {
+  readonly signature: GraphQLVariableSignature;
+  readonly value: unknown;
+}
+
+type VariableValuesOrErrors =
+  | { variableValues: VariableValues; errors?: never }
+  | { errors: ReadonlyArray<GraphQLError>; variableValues?: never };
 
 /**
  * Prepares an object map of variableValues of the correct type based on the
@@ -47,11 +56,11 @@ export function getVariableValues(
   varDefNodes: ReadonlyArray<VariableDefinitionNode>,
   inputs: { readonly [variable: string]: unknown },
   options?: { maxErrors?: number },
-): CoercedVariableValues {
-  const errors = [];
+): VariableValuesOrErrors {
+  const errors: Array<GraphQLError> = [];
   const maxErrors = options?.maxErrors;
   try {
-    const coerced = coerceVariableValues(
+    const variableValues = coerceVariableValues(
       schema,
       varDefNodes,
       inputs,
@@ -66,7 +75,7 @@ export function getVariableValues(
     );
 
     if (errors.length === 0) {
-      return { coerced };
+      return { variableValues };
     }
   } catch (error) {
     errors.push(error);
@@ -80,8 +89,9 @@ function coerceVariableValues(
   varDefNodes: ReadonlyArray<VariableDefinitionNode>,
   inputs: { readonly [variable: string]: unknown },
   onError: (error: GraphQLError) => void,
-): { [variable: string]: unknown } {
-  const coercedValues: { [variable: string]: unknown } = {};
+): VariableValues {
+  const sources: ObjMap<VariableValueSource> = Object.create(null);
+  const coerced: ObjMap<unknown> = Object.create(null);
   for (const varDefNode of varDefNodes) {
     const varSignature = getVariableSignature(schema, varDefNode);
     if (varSignature instanceof GraphQLError) {
@@ -91,11 +101,13 @@ function coerceVariableValues(
 
     const { name: varName, type: varType } = varSignature;
     if (!Object.hasOwn(inputs, varName)) {
-      if (varSignature.defaultValue) {
-        coercedValues[varName] = coerceDefaultValue(
-          varSignature.defaultValue,
-          varType,
-        );
+      const defaultValue = varSignature.defaultValue;
+      if (defaultValue) {
+        sources[varName] = {
+          signature: varSignature,
+          value: undefined,
+        };
+        coerced[varName] = coerceDefaultValue(defaultValue, varType);
       } else if (isNonNullType(varType)) {
         const varTypeStr = inspect(varType);
         onError(
@@ -120,7 +132,8 @@ function coerceVariableValues(
       continue;
     }
 
-    coercedValues[varName] = coerceInputValue(
+    sources[varName] = { signature: varSignature, value };
+    coerced[varName] = coerceInputValue(
       value,
       varType,
       (path, invalidValue, error) => {
@@ -139,7 +152,7 @@ function coerceVariableValues(
     );
   }
 
-  return coercedValues;
+  return { sources, coerced };
 }
 
 /**
@@ -153,7 +166,7 @@ function coerceVariableValues(
 export function getArgumentValues(
   def: GraphQLField<unknown, unknown> | GraphQLDirective,
   node: FieldNode | DirectiveNode,
-  variableValues?: Maybe<ObjMap<unknown>>,
+  variableValues?: Maybe<VariableValues>,
 ): { [argument: string]: unknown } {
   return experimentalGetArgumentValues(node, def.args, variableValues);
 }
@@ -161,8 +174,8 @@ export function getArgumentValues(
 export function experimentalGetArgumentValues(
   node: FieldNode | DirectiveNode | FragmentSpreadNode,
   argDefs: ReadonlyArray<GraphQLArgument | GraphQLVariableSignature>,
-  variableValues: Maybe<ObjMap<unknown>>,
-  fragmentVariables?: Maybe<FragmentVariables>,
+  variableValues: Maybe<VariableValues>,
+  fragmentVariables?: Maybe<VariableValues>,
 ): { [argument: string]: unknown } {
   const coercedValues: { [argument: string]: unknown } = {};
 
@@ -197,12 +210,12 @@ export function experimentalGetArgumentValues(
 
     if (valueNode.kind === Kind.VARIABLE) {
       const variableName = valueNode.name.value;
-      const scopedVariableValues = fragmentVariables?.signatures[variableName]
-        ? fragmentVariables.values
+      const scopedVariableValues = fragmentVariables?.sources[variableName]
+        ? fragmentVariables
         : variableValues;
       if (
         scopedVariableValues == null ||
-        !Object.hasOwn(scopedVariableValues, variableName)
+        !Object.hasOwn(scopedVariableValues.coerced, variableName)
       ) {
         if (argDef.defaultValue) {
           coercedValues[name] = coerceDefaultValue(
@@ -218,7 +231,7 @@ export function experimentalGetArgumentValues(
         }
         continue;
       }
-      isNull = scopedVariableValues[variableName] == null;
+      isNull = scopedVariableValues.coerced[variableName] == null;
     }
 
     if (isNull && isNonNullType(argType)) {
@@ -265,8 +278,8 @@ export function experimentalGetArgumentValues(
 export function getDirectiveValues(
   directiveDef: GraphQLDirective,
   node: { readonly directives?: ReadonlyArray<DirectiveNode> | undefined },
-  variableValues?: Maybe<ObjMap<unknown>>,
-  fragmentVariables?: Maybe<FragmentVariables>,
+  variableValues?: Maybe<VariableValues>,
+  fragmentVariableValues?: Maybe<VariableValues>,
 ): undefined | { [argument: string]: unknown } {
   const directiveNode = node.directives?.find(
     (directive) => directive.name.value === directiveDef.name,
@@ -277,7 +290,7 @@ export function getDirectiveValues(
       directiveNode,
       directiveDef.args,
       variableValues,
-      fragmentVariables,
+      fragmentVariableValues,
     );
   }
 }
diff --git a/src/utilities/__tests__/coerceInputValue-test.ts b/src/utilities/__tests__/coerceInputValue-test.ts
index 78dede7b81..0a71e39cba 100644
--- a/src/utilities/__tests__/coerceInputValue-test.ts
+++ b/src/utilities/__tests__/coerceInputValue-test.ts
@@ -3,11 +3,12 @@ import { describe, it } from 'mocha';
 
 import { identityFunc } from '../../jsutils/identityFunc.js';
 import { invariant } from '../../jsutils/invariant.js';
-import type { ObjMap } from '../../jsutils/ObjMap.js';
+import type { ReadOnlyObjMap } from '../../jsutils/ObjMap.js';
 
 import { Kind } from '../../language/kinds.js';
-import { parseValue } from '../../language/parser.js';
+import { Parser, parseValue } from '../../language/parser.js';
 import { print } from '../../language/printer.js';
+import { TokenKind } from '../../language/tokenKind.js';
 
 import type { GraphQLInputType } from '../../type/definition.js';
 import {
@@ -24,6 +25,10 @@ import {
   GraphQLInt,
   GraphQLString,
 } from '../../type/scalars.js';
+import { GraphQLSchema } from '../../type/schema.js';
+
+import type { VariableValues } from '../../execution/values.js';
+import { getVariableValues } from '../../execution/values.js';
 
 import {
   coerceDefaultValue,
@@ -557,20 +562,29 @@ describe('coerceInputLiteral', () => {
     valueText: string,
     type: GraphQLInputType,
     expected: unknown,
-    variables?: ObjMap<unknown>,
+    variableValues?: VariableValues,
   ) {
     const ast = parseValue(valueText);
-    const value = coerceInputLiteral(ast, type, variables);
+    const value = coerceInputLiteral(ast, type, variableValues);
     expect(value).to.deep.equal(expected);
   }
 
   function testWithVariables(
-    variables: ObjMap<unknown>,
+    variableDefs: string,
+    inputs: ReadOnlyObjMap<unknown>,
     valueText: string,
     type: GraphQLInputType,
     expected: unknown,
   ) {
-    test(valueText, type, expected, variables);
+    const parser = new Parser(variableDefs);
+    parser.expectToken(TokenKind.SOF);
+    const variableValuesOrErrors = getVariableValues(
+      new GraphQLSchema({}),
+      parser.parseVariableDefinitions(),
+      inputs,
+    );
+    invariant(variableValuesOrErrors.variableValues !== undefined);
+    test(valueText, type, expected, variableValuesOrErrors.variableValues);
   }
 
   it('converts according to input coercion rules', () => {
@@ -789,19 +803,55 @@ describe('coerceInputLiteral', () => {
 
   it('accepts variable values assuming already coerced', () => {
     test('$var', GraphQLBoolean, undefined);
-    testWithVariables({ var: true }, '$var', GraphQLBoolean, true);
-    testWithVariables({ var: null }, '$var', GraphQLBoolean, null);
-    testWithVariables({ var: null }, '$var', nonNullBool, undefined);
+    testWithVariables(
+      '($var: Boolean)',
+      { var: true },
+      '$var',
+      GraphQLBoolean,
+      true,
+    );
+    testWithVariables(
+      '($var: Boolean)',
+      { var: null },
+      '$var',
+      GraphQLBoolean,
+      null,
+    );
+    testWithVariables(
+      '($var: Boolean)',
+      { var: null },
+      '$var',
+      nonNullBool,
+      undefined,
+    );
   });
 
   it('asserts variables are provided as items in lists', () => {
     test('[ $foo ]', listOfBool, [null]);
     test('[ $foo ]', listOfNonNullBool, undefined);
-    testWithVariables({ foo: true }, '[ $foo ]', listOfNonNullBool, [true]);
+    testWithVariables(
+      '($foo: Boolean)',
+      { foo: true },
+      '[ $foo ]',
+      listOfNonNullBool,
+      [true],
+    );
     // Note: variables are expected to have already been coerced, so we
     // do not expect the singleton wrapping behavior for variables.
-    testWithVariables({ foo: true }, '$foo', listOfNonNullBool, true);
-    testWithVariables({ foo: [true] }, '$foo', listOfNonNullBool, [true]);
+    testWithVariables(
+      '($foo: Boolean)',
+      { foo: true },
+      '$foo',
+      listOfNonNullBool,
+      true,
+    );
+    testWithVariables(
+      '($foo: [Boolean])',
+      { foo: [true] },
+      '$foo',
+      listOfNonNullBool,
+      [true],
+    );
   });
 
   it('omits input object fields for unprovided variables', () => {
@@ -810,10 +860,13 @@ describe('coerceInputLiteral', () => {
       requiredBool: true,
     });
     test('{ requiredBool: $foo }', testInputObj, undefined);
-    testWithVariables({ foo: true }, '{ requiredBool: $foo }', testInputObj, {
-      int: 42,
-      requiredBool: true,
-    });
+    testWithVariables(
+      '($foo: Boolean)',
+      { foo: true },
+      '{ requiredBool: $foo }',
+      testInputObj,
+      { int: 42, requiredBool: true },
+    );
   });
 });
 
diff --git a/src/utilities/coerceInputValue.ts b/src/utilities/coerceInputValue.ts
index f912fea4e4..3122edb2ab 100644
--- a/src/utilities/coerceInputValue.ts
+++ b/src/utilities/coerceInputValue.ts
@@ -4,7 +4,6 @@ import { invariant } from '../jsutils/invariant.js';
 import { isIterableObject } from '../jsutils/isIterableObject.js';
 import { isObjectLike } from '../jsutils/isObjectLike.js';
 import type { Maybe } from '../jsutils/Maybe.js';
-import type { ObjMap } from '../jsutils/ObjMap.js';
 import type { Path } from '../jsutils/Path.js';
 import { addPath, pathToArray } from '../jsutils/Path.js';
 import { printPathArray } from '../jsutils/printPathArray.js';
@@ -28,7 +27,7 @@ import {
   isRequiredInputField,
 } from '../type/definition.js';
 
-import type { FragmentVariables } from '../execution/collectFields.js';
+import type { VariableValues } from '../execution/values.js';
 
 type OnErrorCB = (
   path: ReadonlyArray<string | number>,
@@ -229,21 +228,21 @@ function coerceInputValueImpl(
 export function coerceInputLiteral(
   valueNode: ValueNode,
   type: GraphQLInputType,
-  variableValues?: Maybe<ObjMap<unknown>>,
-  fragmentVariableValues?: Maybe<FragmentVariables>,
+  variableValues?: Maybe<VariableValues>,
+  fragmentVariableValues?: Maybe<VariableValues>,
 ): unknown {
   if (valueNode.kind === Kind.VARIABLE) {
-    const variableValue = getVariableValue(
+    const coercedVariableValue = getCoercedVariableValue(
       valueNode,
       variableValues,
       fragmentVariableValues,
     );
-    if (variableValue == null && isNonNullType(type)) {
+    if (coercedVariableValue == null && isNonNullType(type)) {
       return; // Invalid: intentionally return no value.
     }
     // Note: This does no further checking that this variable is correct.
     // This assumes validated has checked this variable is of the correct type.
-    return variableValue;
+    return coercedVariableValue;
   }
 
   if (isNonNullType(type)) {
@@ -287,8 +286,11 @@ export function coerceInputLiteral(
       if (itemValue === undefined) {
         if (
           itemNode.kind === Kind.VARIABLE &&
-          getVariableValue(itemNode, variableValues, fragmentVariableValues) ==
-            null &&
+          getCoercedVariableValue(
+            itemNode,
+            variableValues,
+            fragmentVariableValues,
+          ) == null &&
           !isNonNullType(type.ofType)
         ) {
           // A missing variable within a list is coerced to null.
@@ -323,7 +325,7 @@ export function coerceInputLiteral(
       if (
         !fieldNode ||
         (fieldNode.value.kind === Kind.VARIABLE &&
-          getVariableValue(
+          getCoercedVariableValue(
             fieldNode.value,
             variableValues,
             fragmentVariableValues,
@@ -369,24 +371,24 @@ export function coerceInputLiteral(
   const leafType = assertLeafType(type);
 
   try {
-    return leafType.parseLiteral(valueNode, variableValues);
+    return leafType.parseLiteral(valueNode, variableValues?.coerced);
   } catch (_error) {
     // Invalid: ignore error and intentionally return no value.
   }
 }
 
 // Retrieves the variable value for the given variable node.
-function getVariableValue(
+function getCoercedVariableValue(
   variableNode: VariableNode,
-  variableValues: Maybe<ObjMap<unknown>>,
-  fragmentVariableValues: Maybe<FragmentVariables> | undefined,
+  variableValues: Maybe<VariableValues>,
+  fragmentVariableValues: Maybe<VariableValues>,
 ): unknown {
   const varName = variableNode.name.value;
-  if (fragmentVariableValues?.signatures[varName]) {
-    return fragmentVariableValues.values[varName];
+  if (fragmentVariableValues?.sources[varName] !== undefined) {
+    return fragmentVariableValues.coerced[varName];
   }
 
-  return variableValues?.[varName];
+  return variableValues?.coerced[varName];
 }
 
 /**
diff --git a/src/validation/rules/SingleFieldSubscriptionsRule.ts b/src/validation/rules/SingleFieldSubscriptionsRule.ts
index dfefc6cdd8..b5cddef755 100644
--- a/src/validation/rules/SingleFieldSubscriptionsRule.ts
+++ b/src/validation/rules/SingleFieldSubscriptionsRule.ts
@@ -11,6 +11,7 @@ import type {
   FragmentDetails,
 } from '../../execution/collectFields.js';
 import { collectFields } from '../../execution/collectFields.js';
+import type { VariableValues } from '../../execution/values.js';
 
 import type { ValidationContext } from '../ValidationContext.js';
 
@@ -36,9 +37,7 @@ export function SingleFieldSubscriptionsRule(
         const subscriptionType = schema.getSubscriptionType();
         if (subscriptionType) {
           const operationName = node.name ? node.name.value : null;
-          const variableValues: {
-            [variable: string]: any;
-          } = Object.create(null);
+          const variableValues: VariableValues = Object.create(null);
           const document = context.getDocument();
           const fragments: ObjMap<FragmentDetails> = Object.create(null);
           for (const definition of document.definitions) {