CVE-2026-16291 ProfileGrid < 5.9.9.8 - Subscriber+ Arbitrary Notification Deletion via IDOR
Authenticated users can delete other users' notifications by manipulating notification IDs 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-2026-16291?
CVE-2026-16291 is a medium-severity missing authorization vulnerability in Unknown ProfileGrid, published on 2 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The ProfileGrid WordPress plugin before 5.9.9.8 does not verify that a notification belongs to the requesting user before deleting it, allowing any authenticated user such as a Subscriber to delete other users' notifications by enumerating notification identifiers.
Weakness: CWE-639
Which versions are affected by CVE-2026-16291?
How do I fix CVE-2026-16291?
No fix has been published for CVE-2026-16291 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-2026-16291 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-16291 exists.
Sources
Also known as GHSA-77fq-7qxg-43vp.