CVE-2026-63430
— UNSCOREDpublic exploit availablePublished 2026-10-15 · Updated 2026-10-16
AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.
NVD 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.
Weaknesses
CWE-79
Public exploit & PoC references
- 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/pull/243
- https://github.com/rust-ammonia/ammonia/pull/244
- https://github.com/rust-ammonia/ammonia/pull/245
- 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://github.com/rust-ammonia/ammonia/security/advisories/GHSA-9jh8-v38h-cvhr
- https://github.com/rust-ammonia/ammonia/security/advisories/GHSA-9jh8-v38h-cvhr
All references
- 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/pull/243
- https://github.com/rust-ammonia/ammonia/pull/244
- https://github.com/rust-ammonia/ammonia/pull/245
- 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://github.com/rust-ammonia/ammonia/security/advisories/GHSA-9jh8-v38h-cvhr
- https://ivan09999.github.io/ammonia-mxss
- https://rustsec.org/advisories/RUSTSEC-2026-0193.html
- https://github.com/rust-ammonia/ammonia/security/advisories/GHSA-9jh8-v38h-cvhr
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.
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