Bug 2427617 (CVE-2026-0669)

Summary: CVE-2026-0669 MediaWiki: MediaWiki CSS extension: Information disclosure via path traversal
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in the MediaWiki CSS extension. This vulnerability, categorized as a Path Traversal, allows a remote attacker to access restricted directories. By manipulating file paths, an attacker can read arbitrary files on the server, potentially leading to the disclosure of sensitive information.
Story Points: ---
Clone Of: Environment:
Last Closed: 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: 2427642, 2427643    
Bug Blocks:    

Description OSIDB Bzimport 2026-01-07 18:02:19 UTC
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Wikimedia Foundation MediaWiki - CSS extension allows Path Traversal.This issue affects MediaWiki - CSS extension: 1.44, 1.43, 1.39.