Bug 2507006

Summary:	CVE-2026-65903 cachelib: DOMPurify: Security bypass allows injection of malicious content [epel-all]
Product:	[Fedora] Fedora EPEL	Reporter:	Ganesh <gnaik>
Component:	cachelib	Assignee:	Michel Lind <michel>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	epel9	CC:	michel
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["f085dedd-3200-4733-a86f-f421c4450123"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-08-04 19:46:03 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2443016, 2487042, 2506435

Description Ganesh 2026-07-25 08:03:11 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 before 3.4.0 contains a logic error in the ADD_TAGS function where short-circuit evaluation allows forbidden tags to bypass FORBID_TAGS restrictions. Attackers can craft input containing tags listed in FORBID_TAGS that are also added via ADD_TAGS function, causing them to be retained in sanitized output.

Comment 1 Michel Lind 2026-08-04 17:30:45 UTC

Reassigning from `epel10` to `epel9`: Bug filed against a branch the package never shipped on.

Comment 2 Michel Lind 2026-08-04 19:46:03 UTC

This CVE is in a JavaScript/NodeJS package; the JavaScript here is not shipped in the binary RPMs.