Medium severity · published Oct 18, 2025
CVE-2025-62670
Stored XSS through a system message in FlexDiagrams
6.9
CVSS
0.5%
EPSS
No
On KEV
Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - FlexDiagrams Extension allows Stored XSS.This issue affects Mediawiki - FlexDiagrams Extension: master.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MF
Mediawiki - FlexDiagrams Extension · The Wikimedia Foundation
master · source: vendor
Affected product
MF
Mediawiki - FlexDiagrams Extension
The Wikimedia Foundation