CVE-2026-78139 Notifima < 3.1.4 - Subscriber+ Stock Alert Unsubscription via IDOR
Authenticated subscribers can unsubscribe arbitrary users from stock alerts due to missing ownership verification on a REST endpoint.
- 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-2026-78139?
CVE-2026-78139 is a medium-severity missing authorization vulnerability in Unknown Notifima, published on 27 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Notifima WordPress plugin before 3.1.4 does not verify that the caller owns the subscription being modified on one of its REST endpoints in all versions up to, and including, 3.1.3, allowing authenticated attackers with Subscriber-level access to unsubscribe arbitrary customers from product stock-alert notifications.
Weakness: CWE-639
Which versions are affected by CVE-2026-78139?
How do I fix CVE-2026-78139?
No fix has been published for CVE-2026-78139 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-2026-78139 being exploited?
There is no known exploitation of CVE-2026-78139 in the wild and no public exploit code.
Sources
Also known as GHSA-mcgf-ph66-5qfm.