CVE-2026-79995 User Registration & Membership < 5.2.5 - Subscriber+ Pending Email Change Cancellation via IDOR
Authenticated users can cancel pending email changes for any other user, including administrators, due to missing ownership verification.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-79995?
CVE-2026-79995 is a medium-severity missing authorization vulnerability in Unknown User Registration & Membership, published on 28 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The User Registration & Membership WordPress plugin before 5.2.5 does not verify that the account whose pending email change is being cancelled belongs to the user making the request, allowing authenticated users with Subscriber-level access and above to cancel any other user's in-progress email change, including an administrator's.
Weakness: CWE-639
Which versions are affected by CVE-2026-79995?
How do I fix CVE-2026-79995?
No fix has been published for CVE-2026-79995 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-2026-79995 being exploited?
There is no known exploitation of CVE-2026-79995 in the wild and no public exploit code.
Sources
Also known as GHSA-mfx5-4qv9-69f3.