Medium severity · published Oct 20, 2025
CVE-2025-62698
Stored XSS through system messages in ExternalGuidance
6.9
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 - ExternalGuidance allows Stored XSS.This issue affects Mediawiki - ExternalGuidance: from master before 1.39.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ME
Mediawiki - ExternalGuidance · The Wikimedia Foundation
master before 1.39 · source: vendor
Affected product
ME
Mediawiki - ExternalGuidance
The Wikimedia Foundation