CVE-2026-80513 wpForo Forum < 3.1.6 - Subscriber+ PHP Object Injection via Profile Fields
Authenticated users can inject PHP objects via profile fields, potentially leading to remote code execution or data manipulation if a suitable gadget chain exists.
- 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-2026-80513?
CVE-2026-80513 is a high-severity unsafe deserialization vulnerability in Unknown wpForo Forum, published on 24 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The wpForo Forum WordPress plugin before 3.1.6 does not restrict which classes may be instantiated when it deserializes a user-supplied profile field value, allowing authenticated users with Subscriber-level access and above to inject a PHP Object. No POP chain is present in the wpForo Forum WordPress plugin before 3.1.6 itself; if one is present via another installed wpForo Forum WordPress plugin before 3.1.6 or , this could lead to remote code execution, arbitrary file operations, or SQL injection. This is an incomplete fix of CVE-2026-49769.
Weakness: CWE-502
Which versions are affected by CVE-2026-80513?
How do I fix CVE-2026-80513?
No fix has been published for CVE-2026-80513 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-80513 being exploited?
There is no known exploitation of CVE-2026-80513 in the wild and no public exploit code.
Sources
Also known as GHSA-j2rf-55r9-c5ph.