CVE-2026-0669: css_project css Path Traversal

Vulnerability summary

CVE-2026-0669 is a high (CVSS 7.5) Path Traversal vulnerability in css_project css. EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 36.9% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 07-01-2026
   PublishedVulnerability first disclosed.
2. 07-01-2026
   Last modifiedVulnerability information updated.

Description

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.

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.