Medium severity · published Sep 25, 2026
CVE-2026-100237
Stored i18n XSS in the Flow integration of Thanks
6.1
CVSS
0.2%
EPSS
No
On KEV
Description
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - Thanks Extension allows Stored XSS.
This issue affects Mediawiki - Thanks Extension: from * before 1.43.10/1.45.5/1.46.1.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MT
Mediawiki - Thanks Extension · The Wikimedia Foundation
before 1.43.10/1.45.5/1.46.1 · source: vendor
Affected product
MT
Mediawiki - Thanks Extension
The Wikimedia Foundation