{"id":"EUVD-2026-102241","revision":"3935afec79a6408ca4a29714058f2375","records":[{"revision":"3935afec79a6408ca4a29714058f2375","observedAt":"2026-11-07T13:29:41.887+00:00","statement":{"source":"euvd","id":"EUVD-2026-102241","aliases":["CVE-2026-63430","GHSA-9jh8-v38h-cvhr"],"title":"ammonia is a Rust library for repairing and securing untrusted HTML. Prior to 3.3.2, 4.0.2, and 4.1.3, applications that explicitly allow the math tag, annotation-xml, and at least one raw-text HTML element while disallowing the encoding at…","description":"ammonia is a Rust library for repairing and securing untrusted HTML. Prior to 3.3.2, 4.0.2, and 4.1.3, applications that explicitly allow the math tag, annotation-xml, and at least one raw-text HTML element while disallowing the encoding attribute can permit mutation cross-site scripting. ammonia does not correctly implement annotation-xml's encoding-dependent MathML integration-point behavior after attribute filtering removes encoding, so the sanitizer validates a descendant under one namespace interpretation while the browser reparses the output under another. An attacker can use that namespace transition and an allowed raw-text HTML element to execute JavaScript when a user renders the sanitized output. The required tags are not enabled by default, so applications that do not explicitly allow them are not affected. This issue is fixed in versions 3.3.2, 4.0.2, and 4.1.3.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","score":6.3,"severity":null}],"references":["https://github.com/rust-ammonia/ammonia/security/advisories/GHSA-9jh8-v38h-cvhr","https://github.com/rust-ammonia/ammonia/pull/243","https://github.com/rust-ammonia/ammonia/pull/244","https://github.com/rust-ammonia/ammonia/pull/245","https://github.com/rust-ammonia/ammonia/commit/004bf2cee4288f74a6ee619d589e3e90c24c09ca","https://github.com/rust-ammonia/ammonia/commit/7ac3fd3145236f28857eeecbadb544c8659cba31","https://github.com/rust-ammonia/ammonia/commit/b51bf4f9749ed3cd518330105f20a2c39c9ee274","https://github.com/rust-ammonia/ammonia/releases/tag/v3.3.2","https://github.com/rust-ammonia/ammonia/releases/tag/v4.0.2","https://github.com/rust-ammonia/ammonia/releases/tag/v4.1.3","https://ivan09999.github.io/ammonia-mxss","https://rustsec.org/advisories/RUSTSEC-2026-0193.html"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-102241","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 15, 2026, 6:10:35 PM","dateUpdated":"Oct 15, 2026, 8:25:49 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-102241","identifiers":["EUVD-2026-102241","CVE-2026-63430","GHSA-9jh8-v38h-cvhr"]},"retained":false,"historicalAffected":[]}],"coverage":[]}