PT-2026-22478 · WordPress · Wpforo Forum

Scott Moore · Published 2026-02-28 · Updated 2026-03-04 · CVE-2026-28557

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions wpForo Forum version 2.4.14

Description An issue exists in wpForo Forum that allows authenticated users to perform bulk wpForo usergroup reassignment. This is possible due to a missing capability check in the wpforo synch roles AJAX handler. An attacker can obtain a nonce from the usergroups admin page, which is accessible to any authenticated user, and then remap all wpForo usergroups to arbitrary WordPress roles. The vulnerable component is the wpforo synch roles handler.

Recommendations Update to a newer version that contains a fix for this vulnerability. As a temporary workaround, restrict access to the wpforo synch roles AJAX handler until a patch is available.

Fix

LPE

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-28557

Affected Products

Wpforo Forum

References · 8

• https://wordpress.org/plugins/wpforo/#developers · Patch
• https://osv.dev/vulnerability/CVE-2026-28557 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-28557 · Security Note
• https://vulncheck.com/advisories/wpforo-forum-privilege-escalation-via-role-synchronization-handler · Note
• https://t.me/cveNotify/154058 · Telegram Post
• https://wordpress.org/plugins/wpforo · Note
• https://t.me/cveNotify/153649 · Telegram Post
• https://t.me/CVEtracker/46045 · Telegram Post