What’s Vulnerable › Vulnerabilities

CVE-2026-103584: attacker-controlled javascript license URL via XSS

• Severity: low (CVSS 1.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-30 · updated 2026-10-01
• Weakness: CWE-80

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.

Affected products

• The Wikimedia Foundation MediaWiki CommonsMetadata extension: 1.46, 1.45, 1.43

References

• https://gerrit.wikimedia.org/r/q/I66c102cae36a9d499c95c37db7458371c7c87258
• https://phabricator.wikimedia.org/T435999

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