CVE-2026-54705: mathlive's Lack of Escaping of HTML allows for XSS

July 29, 2026

Despite the 0.104.0 patch escaping attribute-bearing constructs (\htmlData, \href), text-content reflection was missed. The \text{}, \mbox{} commands accept arbitrary characters in their body and emit them raw and unescaped into both the HTML markup and the MathML output, leading to XSS.

References

github.com/advisories/GHSA-fm7p-gw32-828p
github.com/arnog/mathlive/commit/5fe1c46153883f9ec0249a5c8c34e64aaae9cfb8
github.com/arnog/mathlive/issues/3028
github.com/arnog/mathlive/security/advisories/GHSA-fm7p-gw32-828p
nvd.nist.gov/vuln/detail/CVE-2026-54705

Code Behaviors & Features

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