---
id: CVE-2026-80513
title: >-
  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 …
summary: >-
  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 …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-502
product: wpForo Forum
affected:
  - wpforo_forum < 3.1.6
published: '2026-09-24'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T14:42:02.707'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80513'
references:
  - url: 'https://wpscan.com/vulnerability/09c9b9e7-c178-4f05-80d8-d4d77b7c5050/'
    label: contact@wpscan.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-24T10:37:15.714540Z'
ingestedAt: '2026-09-24T06:39:26.612Z'
epss: 0.00313
epssPercentile: 0.21651
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.