CVE-2025-62661 Do permission checking when getting counts of global and local edits, new articles and thanks
Attackers can bypass permission checks to view counts of edits, new articles, and thanks in MediaWiki extensions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-62661?
CVE-2025-62661 is a medium-severity missing authorization vulnerability in The Wikimedia Foundation Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension, published on 21 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Incorrect Default Permissions vulnerability in The Wikimedia Foundation Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension: from 1.43 before 1.44.
Weakness: CWE-276
Which versions are affected by CVE-2025-62661?
How do I fix CVE-2025-62661?
No fix has been published for CVE-2025-62661 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-2025-62661 being exploited?
There is no known exploitation of CVE-2025-62661 in the wild and no public exploit code.
Sources
Also known as GHSA-83x8-r8f9-j2f7.