diff --git a/system/ThirdParty/Kint/Parser/FsPathPlugin.php b/system/ThirdParty/Kint/Parser/FsPathPlugin.php
index 7ec49de109cc..1a98c6dcd134 100644
--- a/system/ThirdParty/Kint/Parser/FsPathPlugin.php
+++ b/system/ThirdParty/Kint/Parser/FsPathPlugin.php
@@ -30,6 +30,7 @@
 use Kint\Zval\Representation\SplFileInfoRepresentation;
 use Kint\Zval\Value;
 use SplFileInfo;
+use TypeError;
 
 class FsPathPlugin extends AbstractPlugin
 {
@@ -59,8 +60,13 @@ public function parse(&$var, Value &$o, int $trigger): void
             return;
         }
 
-        if (!@\file_exists($var)) {
-            return;
+        try {
+            if (!@\file_exists($var)) {
+                return;
+            }
+        } catch (TypeError $e) {// @codeCoverageIgnore
+            // Only possible in PHP 7
+            return; // @codeCoverageIgnore
         }
 
         if (\in_array($var, self::$blacklist, true)) {
diff --git a/system/ThirdParty/Kint/Parser/MysqliPlugin.php b/system/ThirdParty/Kint/Parser/MysqliPlugin.php
index 90a4abd6b511..22a23a901ccb 100644
--- a/system/ThirdParty/Kint/Parser/MysqliPlugin.php
+++ b/system/ThirdParty/Kint/Parser/MysqliPlugin.php
@@ -105,7 +105,8 @@ public function parse(&$var, Value &$o, int $trigger): void
         foreach ($o->value->contents as $key => $obj) {
             if (isset($this->connected_readable[$obj->name])) {
                 if (!$connected) {
-                    continue;
+                    // No failed connections after PHP 8.1
+                    continue; // @codeCoverageIgnore
                 }
             } elseif (isset($this->empty_readable[$obj->name])) {
                 // No failed connections after PHP 8.1
diff --git a/system/ThirdParty/Kint/Zval/BlobValue.php b/system/ThirdParty/Kint/Zval/BlobValue.php
index 5e9f129d1181..66f60fdb9043 100644
--- a/system/ThirdParty/Kint/Zval/BlobValue.php
+++ b/system/ThirdParty/Kint/Zval/BlobValue.php
@@ -182,7 +182,9 @@ public static function detectEncoding(string $string)
         if (\function_exists('iconv')) {
             foreach (self::$legacy_encodings as $encoding) {
                 // Iconv detection works by triggering
-                // "Detected an illegal character in input string" warnings
+                // "Detected an illegal character in input string" notices
+                // This notice does not become a TypeError with strict_types
+                // so we don't have to wrap this in a try catch
                 if (@\iconv($encoding, $encoding, $string) === $string) {
                     return $encoding;
                 }
diff --git a/system/ThirdParty/Kint/Zval/Representation/SplFileInfoRepresentation.php b/system/ThirdParty/Kint/Zval/Representation/SplFileInfoRepresentation.php
index 6424ee6a9175..dad9d04cdc9e 100644
--- a/system/ThirdParty/Kint/Zval/Representation/SplFileInfoRepresentation.php
+++ b/system/ThirdParty/Kint/Zval/Representation/SplFileInfoRepresentation.php
@@ -76,7 +76,7 @@ public function __construct(SplFileInfo $fileInfo)
             }
         } catch (RuntimeException $e) {
             if (false === \strpos($e->getMessage(), ' open_basedir ')) {
-                throw $e;
+                throw $e; // @codeCoverageIgnore
             }
         }
 
diff --git a/system/ThirdParty/Kint/init.php b/system/ThirdParty/Kint/init.php
index 039489ab43ad..d682d9a9dc36 100644
--- a/system/ThirdParty/Kint/init.php
+++ b/system/ThirdParty/Kint/init.php
@@ -51,7 +51,7 @@
 if (false !== \ini_get('xdebug.file_link_format')) {
     Kint::$file_link_format = \ini_get('xdebug.file_link_format');
 }
-if (isset($_SERVER['DOCUMENT_ROOT'])) {
+if (isset($_SERVER['DOCUMENT_ROOT']) && false === \strpos($_SERVER['DOCUMENT_ROOT'], "\0")) {
     Kint::$app_root_dirs = [
         $_SERVER['DOCUMENT_ROOT'] => '<ROOT>',
     ];