CVE-2025-61649 UserInfoCard: Check that performing user has permission to view log entries for number of past blocks
An attacker can view log entries for past blocks without proper permission checks, exposing sensitive user data.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-61649?
CVE-2025-61649 is a low-severity missing authorization vulnerability in Wikimedia Foundation CheckUser, published on 3 Feb 2026. An attacker needs administrator access to exploit it, 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/Services/CheckUserUserInfoCardService.Php.
This issue affects CheckUser: from 7cedd58781d261f110651b6af4f41d2d11ae7309.
Weakness: CWE-22
Which versions are affected by CVE-2025-61649?
How do I fix CVE-2025-61649?
No fix has been published for CVE-2025-61649 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-61649 being exploited?
There is no known exploitation of CVE-2025-61649 in the wild and no public exploit code.
Sources
Also known as GHSA-v687-vxc5-92hv.