Bug 2520438

Summary: CVE-2026-65901 forgejo: DOMPurify: Cross-site scripting vulnerability via attacker-controlled nodeName [fedora-all]
Product: [Fedora] Fedora Reporter: Ganesh <gnaik>
Component: forgejoAssignee: Fedora Infrastructure SIG <infra-sig>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: amessina, gbailey, go-sig, infra-sig, nphilipp
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["312dd941-35ce-4f58-830d-ab83ed6d0faa"]}
Fixed In Version: Doc Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2506432    

Description Ganesh 2026-08-20 16:01:13 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

DOMPurify through 3.4.6 contains a cross-site scripting vulnerability in IN_PLACE mode that trusts attacker-controlled nodeName on live non-form nodes. Attackers can supply hostile live DOM objects with real script children whose observable nodeName is clobbered to appear as allowed elements, causing scripts to execute when the sanitized tree is inserted into a live document.