CVE-2025-6593 "{{SITENAME}} registered email address has been changed" email sent to unverified email addresses
MediaWiki sends confirmation emails to unverified addresses, potentially disclosing user email changes to unauthorized parties.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-6593?
CVE-2025-6593 is a low-severity vulnerability in Wikimedia Foundation MediaWiki, published on 2 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/user/User.Php.
This issue affects MediaWiki: from 1.27.0 before 1.39.13, 1.42.7 1.43.2, 1.44.0.
Weakness: CWE-200
Which versions are affected by CVE-2025-6593?
How do I fix CVE-2025-6593?
Upgrade to a fixed version.
Is CVE-2025-6593 being exploited?
There is no known exploitation of CVE-2025-6593 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2025-6593, GHSA-qr4c-wx99-f4h5, UBUNTU-CVE-2025-6593.