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Low severity · published Sep 30, 2026
CVE-2026-103584
attacker-controlled javascript license URL via XSS
1.1
CVSS
0.3%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MC
MediaWiki CommonsMetadata extension · The Wikimedia Foundation
1.46; 1.45; 1.43 · source: vendor
Affected product
MC
MediaWiki CommonsMetadata extension
The Wikimedia Foundation
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-103584
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-103584
phabricator.wikimedia.org
https://phabricator.wikimedia.org/T435999
gerrit.wikimedia.org
https://gerrit.wikimedia.org/r/q/I66c102cae36a9d499c95c37db7458371c7c87258