Bug 2550595 (CVE-2026-102342)

Summary:	CVE-2026-102342 ammonia: ammonia: Stored cross-site scripting via SVG animation elements
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	anthomas, blitton, dschmidt, ehelms, ggainey, ikhan, jlanda, jpasqual, juwatts, kshier, mbarnett, mdellweg, mhulan, nmoumoul, osousa, pcreech, rbobbitt, rchan, rhel-process-autobot, simaishi, smallamp, stcannon, tmalecek, watson-tool-maintainers, yguenane
Target Milestone:	---	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in ammonia. This flaw allows stored Cross-Site Scripting (XSS) in applications configured to permit SVG animate or set elements. The sanitizer fails to properly neutralize animation attributes that target link destinations with JavaScript URIs. A remote attacker can exploit this vulnerability by supplying crafted SVG content, creating clickable links that execute arbitrary script in the user's browser session.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Description OSIDB Bzimport 2026-10-13 14:52:01 UTC

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.