CVE-2026-91092 Missing authorization in wpForo Forum
Authenticated subscribers can modify guest forum posts if guest editing is enabled, allowing unauthorized content changes.
- 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-2026-91092?
CVE-2026-91092 is a medium-severity missing authorization vulnerability in tomdever wpForo Forum, published on 22 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The wpForo Forum plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.1.5. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to take over another guest author's forum post and modify its title, body, author name, and stored owner email address. This requires that guest posting and editing are enabled on the forum, and that the attacker knows the target guest author's email address.
Weakness: CWE-862
Which versions are affected by CVE-2026-91092?
How do I fix CVE-2026-91092?
No fix has been published for CVE-2026-91092 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-2026-91092 being exploited?
There is no known exploitation of CVE-2026-91092 in the wild and no public exploit code.
Sources
Also known as GHSA-439g-qg26-vjww.