DescriptionKaTeX is a JavaScript library for TeX math rendering on the web. Code that uses KaTeX's `trust` option, specifically that provides a function to blacklist certain URL protocols, can be fooled by URLs in malicious inputs that use uppercase characters in the protocol. In particular, this can allow for malicious input to generate `javascript:` links in the output, even if the `trust` function tries to forbid this protocol via `trust: (context) => context.protocol !== 'javascript'`. Upgrade to KaTeX v0.16.10 to remove this vulnerability.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1067805

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
node-katex (PTS)bullseye0.10.2+dfsg-8vulnerable
trixie, sid0.16.10+~cs6.1.0-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[bookworm] - node-katex <no-dsa> (Minor issue)
[bullseye] - node-katex <no-dsa> (Minor issue) (v0.16.10)

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