XSS in Rust-Ammonia Ammonia
CVE-2026-102342
ammonia is a Rust library for repairing and securing untrusted HTML. Prior to 3.3.3, 4.0.3, and 4.1.4, applications that allow the SVG animate or set elements can retain an animation whose attributeName targets href and whose value uses the javascript scheme. The sanitized SVG can therefore create a script-bearing link, and a user who clicks the link can execute attacker-controlled script in the application's origin, enabling stored cross-site scripting. This issue is fixed in versions 3.3.3, 4.0.3, and 4.1.4.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Rust-Ammonia Ammonia — versions < 3.3.3, >= 4.0.0, < 4.0.3, >= 4.1.2, < 4.1.4
Weakness classification (CWE)
References
- github.com/rust-ammonia/ammonia/security/advisories/GHSA-m6mh-2hw2-555x
- github.com/rust-ammonia/ammonia/pull/250
- github.com/rust-ammonia/ammonia/pull/251
- github.com/rust-ammonia/ammonia/pull/252
- github.com/rust-ammonia/ammonia/commit/9394bd81179e756cb911314deabd943f1a9c8989
- github.com/rust-ammonia/ammonia/commit/9e3335e2dd8ab07346ff7997f20662a3da4023f6
- github.com/rust-ammonia/ammonia/commit/d2ae1547f478bd84d158bc5e57f5d31437dc4d8d
- github.com/rust-ammonia/ammonia/releases/tag/v3.3.3
- github.com/rust-ammonia/ammonia/releases/tag/v4.0.3
- github.com/rust-ammonia/ammonia/releases/tag/v4.1.4
Frequently asked questions
- What is CVE-2026-102342?
- CVE-2026-102342 is a medium-severity vulnerability in Rust-Ammonia Ammonia, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-10-13.
- How severe is CVE-2026-102342?
- Medium severity. CVSS v3 base score is 5.4 out of 10.