Medium severity · published Oct 20, 2025
CVE-2025-62656
GlobalBlocking Special:GlobalBlockList vulnerable to message key stored XSS
5.8
CVSS
0.3%
EPSS
No
On KEV
Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation MediaWiki GlobalBlocking extension allows Stored XSS.This issue affects MediaWiki GlobalBlocking extension: 1.43, 1.44.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MG
MediaWiki GlobalBlocking extension · The Wikimedia Foundation
1.43; 1.44 · source: vendor
Affected product
MG
MediaWiki GlobalBlocking extension
The Wikimedia Foundation