All vulnerabilities
CVE-2026-103584

MediaWiki CommonsMetadata extension: attacker-controlled javascript license URL via XSS

The Wikimedia Foundation MediaWiki CommonsMetadata extensionApplications & CMS
Open in ThreatlineRecord JSON
CVSS
1.1Low
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.29%Chance of exploitation activity in the next 30 days, higher than 19% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version yet
Published30 Sep 2026Updated 1 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version.

Description

Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki CommonsMetadata extension allows Cross-Site Scripting (XSS).

This issue affects MediaWiki CommonsMetadata extension: 1.46, 1.45, and 1.43.

Text from CVE List

Affected versions 3

  • MediaWiki CommonsMetadata extensionaffected: 1.46CVE List
  • MediaWiki CommonsMetadata extensionaffected: 1.45CVE List
  • MediaWiki CommonsMetadata extensionaffected: 1.43CVE List

References 2