Low severity · published Feb 3, 2026
CVE-2025-61650
UserInfoCard is vulnerable to message key stored XSS
1.1
CVSS
0.3%
EPSS
No
On KEV
Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation CheckUser. This vulnerability is associated with program files src/Services/CheckUserUserInfoCardService.Php.
This issue affects CheckUser: from * before 795bf333272206a0189050d975e94b70eb7dc507.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CH
CheckUser · Wikimedia Foundation
before 795bf333272206a0189050d975e94b70eb7dc507 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-61650
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-61650
phabricator.wikimedia.org
https://phabricator.wikimedia.org/T403289
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