ammonia allows stored XSS through unsanitized SVG animate and set attributes

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-102342
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-13 15:17:30 UTC
Updated2026-10-13 21:17:20 UTC
Descriptionammonia 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.

Risk And Classification

Primary CVSS: v3.1 5.4 MEDIUM from [email protected]

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

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

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.1CNADECLARED5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Rust-ammonia Ammonia affected < 3.3.3 Not specified
CNA Rust-ammonia Ammonia affected >= 4.0.0, < 4.0.3 Not specified
CNA Rust-ammonia Ammonia affected >= 4.1.2, < 4.1.4 Not specified

References

ReferenceSourceLinkTags
github.com/rust-ammonia/ammonia/commit/9394bd81179e756cb911314deabd943f1... [email protected] github.com
github.com/rust-ammonia/ammonia/commit/d2ae1547f478bd84d158bc5e57f5d3143... [email protected] github.com
github.com/rust-ammonia/ammonia/security/advisories/GHSA-m6mh-2hw2-555x [email protected] github.com
github.com/rust-ammonia/ammonia/releases/tag/v3.3.3 [email protected] github.com
github.com/rust-ammonia/ammonia/pull/252 [email protected] github.com
github.com/rust-ammonia/ammonia/releases/tag/v4.0.3 [email protected] github.com
github.com/rust-ammonia/ammonia/pull/251 [email protected] github.com
github.com/rust-ammonia/ammonia/pull/250 [email protected] github.com
github.com/rust-ammonia/ammonia/commit/9e3335e2dd8ab07346ff7997f20662a3d... [email protected] github.com
github.com/rust-ammonia/ammonia/releases/tag/v4.1.4 [email protected] github.com
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