security: sanitize key_value field content

[adrianthedev]

Description

Addresses GHSA-ghjv-mh6x-7q6h

Fixes a security issue where the output for the key_value field is not sanitized.

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works

Screenshots

Manual review steps

1. Follow the steps in the CVE to test.

Manual reviewer: please leave a comment with output from the test if that's the case.

[codeclimate]

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[github-actions]

This PR has been merged into main. The functionality will be available in the next release.

Please check the release guide for more information.