fix(deps): update dependency katex to v0.16.21 [security]

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
katex (source)	0.16.20 -> 0.16.21

GitHub Vulnerability Alerts

CVE-2025-23207

Impact

KaTeX users who render untrusted mathematical expressions with renderToString could encounter malicious input using \htmlData that runs arbitrary JavaScript, or generate invalid HTML.

Patches

Upgrade to KaTeX v0.16.21 to remove this vulnerability.

Workarounds

• Avoid use of or turn off the trust option, or set it to forbid \htmlData commands.
• Forbid inputs containing the substring "\\htmlData".
• Sanitize HTML output from KaTeX.

Details

\htmlData did not validate its attribute name argument, allowing it to generate invalid or malicious HTML that runs scripts.

For more information

If you have any questions or comments about this advisory:

• Open an issue or security advisory in the KaTeX repository
• Email us at katex-security@mit.edu

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Release Notes

KaTeX/KaTeX (katex)

v0.16.21

Compare Source

Bug Fixes

• escape \htmlData attribute name (57914ad)

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[deepsource-io]

Here's the code health analysis summary for commits c5ce0af..ba9a9be. View details on DeepSource ↗.

Analysis Summary

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