Low severity · published Sep 30, 2026
CVE-2026-103444
Stored XSS through system messages in WikiForum
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 WikiForum extension allows Stored XSS.
This issue affects MediaWiki WikiForum extension: master.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MW
MediaWiki WikiForum extension · The Wikimedia Foundation
master · source: vendor
Affected product
MW
MediaWiki WikiForum extension
The Wikimedia Foundation