CVE-2026-28555

wpForo Forum 2.4.14 contains a missing authorization vulnerability that allows authenticated subscribers to close or reopen any forum topic via the wpforo_close_ajax handler. Attackers submit a valid nonce with an arbitrary topic ID to bypass the moderator permission requirement and disrupt forum discussions.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://wordpress.org/plugins/wpforo/	Product
https://wordpress.org/plugins/wpforo/#developers	Release Notes
https://www.vulncheck.com/advisories/wpforo-forum-missing-authorization-via-topic-close-ajax-handler	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:gvectors:wpforo_forum:*:*:*:*:*:wordpress:*:*

History

04 Mar 2026, 03:00

Type	Values Removed	Values Added
CPE		cpe:2.3:a:gvectors:wpforo_forum::::::wordpress::*
References	~~() https://wordpress.org/plugins/wpforo/ -~~	() https://wordpress.org/plugins/wpforo/ - Product
References	~~() https://wordpress.org/plugins/wpforo/#developers -~~	() https://wordpress.org/plugins/wpforo/#developers - Release Notes
References	~~() https://www.vulncheck.com/advisories/wpforo-forum-missing-authorization-via-topic-close-ajax-handler -~~	() https://www.vulncheck.com/advisories/wpforo-forum-missing-authorization-via-topic-close-ajax-handler - Third Party Advisory
First Time		Gvectors Gvectors wpforo Forum

02 Mar 2026, 20:30

Type	Values Removed	Values Added
Summary		(es) wpForo Forum 2.4.14 contiene una vulnerabilidad de autorización faltante que permite a los suscriptores autenticados cerrar o reabrir cualquier tema del foro a través del gestor wpforo_close_ajax. Los atacantes envían un nonce válido con un ID de tema arbitrario para eludir el requisito de permiso de moderador y perturbar las discusiones del foro.

28 Feb 2026, 22:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-28 22:16

Updated : 2026-03-04 03:00

NVD link : CVE-2026-28555

Mitre link : CVE-2026-28555

CVE.ORG link : CVE-2026-28555

JSON object : View

Products Affected

gvectors

wpforo_forum

CWE

CWE-862

Missing Authorization

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