CVE-2025-23207

\htmlData does not validate attribute names in KaTeX

Description

KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web. KaTeX users who render untrusted mathematical expressions with `renderToString` could encounter malicious input using `\htmlData` that runs arbitrary JavaScript, or generate invalid HTML. Users are advised to upgrade to KaTeX v0.16.21 to remove this vulnerability. Users unable to upgrade should avoid use of or turn off the `trust` option, or set it to forbid `\htmlData` commands, forbid inputs containing the substring `"\\htmlData"` and sanitize HTML output from KaTeX.

Category

6.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Affected: KaTeX KaTeX
Published at:
Updated at:

References

Link Tags
https://github.com/KaTeX/KaTeX/security/advisories/GHSA-cg87-wmx4-v546
https://github.com/KaTeX/KaTeX/commit/ff289955e81aab89086eef09254cbf88573d415c

Frequently Asked Questions

What is the severity of CVE-2025-23207?
CVE-2025-23207 has been scored as a medium severity vulnerability.
How to fix CVE-2025-23207?
To fix CVE-2025-23207, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-23207 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-23207 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-23207?
CVE-2025-23207 affects KaTeX KaTeX.
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