Medium 6.3Published Jul 29, 2026

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

Updated under an hour ago (Oct 26, 2026, 5:50 AM ET)

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It affects arnog mathlive. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for arnog mathlive

Exploited in the last 30 days

MathLive provides web components for math display and input. Prior to 0.110.0, MathLive fails to escape text-mode content in \text{} and \mbox{} commands in Box.toMarkup at src/core/box.ts, in xmlEscape, scanText, and text-mode output in src/formats/atom-to-math-ml.ts, and through convertLatexToMarkup, convertLatexToMathMl, <math-span>, <math-div>, and the default identity MathfieldElement.createHTML, allowing malicious input to run arbitrary JavaScript when rendered. This issue is fixed in version 0.110.0.

CVSS: 6.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Weakness (CWE): CWE-116
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jul 29, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

arnog mathlive arnog:mathlive (from the name)	before 0.110.0	CNA record

References

https://github.com/arnog/mathlive/security/advisories/GHSA-fm7p-gw32-828px-refsource-confirm
https://github.com/arnog/mathlive/issues/3028x-refsource-misc
https://github.com/arnog/mathlive/commit/5fe1c46153883f9ec0249a5c8c34e64aaae9cfb8x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.