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  5. CVE-2026-102342

CVE-2026-102342: Ammonia: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

September 29, 2026

The following SVG will produce a link with a javascript scheme. If the user clicks this link, they will run it.

<svg xmlns="http://www.w3.org/2000/svg">
<a>
<set attributeName="href" to="javascript:alert('SET_XSS')"></set>
<text y="30">Click set</text>
</a>
</svg>

References

  • github.com/advisories/GHSA-m6mh-2hw2-555x
  • 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/pull/250
  • github.com/rust-ammonia/ammonia/pull/251
  • github.com/rust-ammonia/ammonia/pull/252
  • github.com/rust-ammonia/ammonia/security/advisories/GHSA-m6mh-2hw2-555x
  • nvd.nist.gov/vuln/detail/CVE-2026-102342
  • rustsec.org/advisories/RUSTSEC-2026-0213.html

Code Behaviors & Features

Detect and mitigate CVE-2026-102342 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →

Affected versions

All versions before 3.3.3, all versions starting from 4.0.0 before 4.0.3, all versions starting from 4.1.2 before 4.1.4

Fixed versions

  • 3.3.3
  • 4.0.3
  • 4.1.4

Solution

Upgrade to versions 3.3.3, 4.0.3, 4.1.4 or above.

Impact 5.4 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Learn more about CVSS

Weakness

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Source file

cargo/ammonia/CVE-2026-102342.yml

Spotted a mistake? Edit the file on GitLab.

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