Vulnerability · Published Sep 24, 2026 · Assigned by WPScan

CVE-2026-80513wpForo Forum < 3.1.6 - Subscriber+ PHP Object Injection via Profile Fields

High 7.5

In plain English

A high-severity unsafe deserialization in wpForo Forum from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.3%top 75.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
Unknown	wpForo Forum	0 – before 3.1.6

Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://wpscan.com/vulnerability/09c9b9e7-c178-4f05-80d8-d4d77b7c5050/ exploit, vdb-entry, technical-description