High severity · published Jan 17, 2025
CVE-2025-23207
\htmlData does not validate attribute names in KaTeX
7.2
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KA
KaTeX · KaTeX
>= 0.12.0, < 0.16.21 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-23207
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-23207
Patch
https://github.com/KaTeX/KaTeX/commit/ff289955e81aab89086eef09254cbf88573d415c
Third Party Advisory
https://github.com/KaTeX/KaTeX/security/advisories/GHSA-cg87-wmx4-v546
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