None severity · published Feb 2, 2026
CVE-2025-6596
Vector inserts portlet labels as HTML, allowing for stored XSS through system messages
0.0
CVSS
0.4%
EPSS
No
On KEV
Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Vector. This vulnerability is associated with program files resources/skins.Vector.Js/portlets.Js, resources/skins.Vector.Legacy.Js/portlets.Js.
This issue affects Vector: from >= 1.40.0 before 1.42.7, 1.43.2, 1.44.0.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VE
Vector · Wikimedia Foundation
>= 1.40.0 before 1.42.7, 1.43.2, 1.44.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-6596
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-6596
phabricator.wikimedia.org
https://phabricator.wikimedia.org/T396685
More from Vector
0.0
CVE-2025-61657
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Vector