CVE-2025-61647 UserInfoCard: Don't allow access to information about users who are suppressed if you don't have suppressor rights
Attackers can access suppressed user information without proper suppressor rights, exposing private data in Wikimedia CheckUser.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-61647?
CVE-2025-61647 is a low-severity vulnerability in Wikimedia Foundation CheckUser, published on 3 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Vulnerability in Wikimedia Foundation CheckUser. This vulnerability is associated with program files src/Api/Rest/Handler/UserInfoHandler.Php.
This issue affects CheckUser: from a3dc1bbcc33acbcca6831d6afaccbb1054c93a57, 0584eb2ad564648aa3ce9c555dd044dda02b55f4.
Weakness: CWE-22
Which versions are affected by CVE-2025-61647?
How do I fix CVE-2025-61647?
No fix has been published for CVE-2025-61647 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-61647 being exploited?
There is no known exploitation of CVE-2025-61647 in the wild and no public exploit code.
Sources
Also known as GHSA-j8mp-qmj4-gphg.