VULNRABLE / Vulnerability / CVE-2026-63430

CVE-2026-63430

MEDIUM LOW ammonia GHSA

Exploit verdict: No active-exploit signal

CVSS Score

5.5

Severity

MEDIUM

EPSS

Source

GHSA

Summary

ammonia: mXSS via MathML `annotation-xml` encoding strip

What this means

CVE-2026-63430 is a medium-severity vulnerability affecting ammonia, rated CVSS 5.5. The EPSS model estimates a 1% probability of exploitation in the next 30 days. Published October 22, 2026.

View full advisory at GHSA →