---
id: CVE-2026-91092
title: >-
  The wpForo Forum plugin for WordPress is vulnerable to authorization bypass in
  all versions up to, and including, 3.1.5
summary: >-
  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 possi…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-862
vendor: tomdever
product: wpForo Forum
affected:
  - wpforo_forum <= 3.1.5
published: '2026-09-22'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T19:19:43.803'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-91092'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Actions.php#L806
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Members.php#L3704
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Posts.php#L319
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/includes/functions.php#L2820
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/includes/hooks.php#L1004
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3702319%40wpforo&new=3702319%40wpforo
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/97084759-a8fb-4b26-a6fa-93d005b1110e?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-23T18:37:44.048003Z'
epss: 0.0024
epssPercentile: 0.15371
ingestedAt: '2026-09-22T08:00:27.693Z'
---

## Overview

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.

## Remediation

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