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CVE-2025-61650

UserInfoCard is vulnerable to message key stored XSS

LOW
1.1
CVSS Score
Published: February 3, 2026 at 12:15 AM UTC
Updated: June 17, 2026 at 09:50 AM UTC
1 product affected across 1 vendorCheckUser

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Severity
LOW1.1
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

CheckUser· Wikimedia
60%
v < 795bf333272206a0189050d975e94b70eb7dc507

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://phabricator.wikimedia.org/T403289

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

1.1LOWwikimedia-foundation
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79

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