PT-2026-22476 · WordPress · Wpforo Forum

Scott Moore · Published 2026-02-28 · Updated 2026-03-04 · CVE-2026-28555

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

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

Description The software contains a missing authorization flaw. Authenticated subscribers can close or reopen any forum topic through the wpforo close ajax handler. An attacker can bypass the moderator permission requirement by submitting a valid nonce along with an arbitrary topic ID, potentially disrupting forum discussions.

Recommendations Update to a newer version that contains a fix for this vulnerability. As a temporary workaround, consider restricting access to the wpforo close ajax handler.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-28555

Affected Products

Wpforo Forum

References · 8

• https://osv.dev/vulnerability/CVE-2026-28555 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-28555 · Security Note
• https://wordpress.org/plugins/wpforo/#developers · Patch
• https://t.me/CVEtracker/46043 · Telegram Post
• https://wordpress.org/plugins/wpforo · Note
• https://t.me/cveNotify/154066 · Telegram Post
• https://t.me/cveNotify/153647 · Telegram Post
• https://vulncheck.com/advisories/wpforo-forum-missing-authorization-via-topic-close-ajax-handler · Note