CVE-2026-28557

wpForo Forum 2.4.14 contains a missing capability check vulnerability that allows authenticated users to trigger bulk wpForo usergroup reassignment via the wpforo_synch_roles AJAX handler. Attackers access the usergroups admin page, accessible to any authenticated user, to obtain a nonce, then remap all wpForo usergroups to arbitrary WordPress roles.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

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-privilege-escalation-via-role-synchronization-handler	Third Party Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-02-28 22:16

Updated : 2026-03-04 02:50

NVD link : CVE-2026-28557

Mitre link : CVE-2026-28557

CVE.ORG link : CVE-2026-28557

JSON object : View

Products Affected

gvectors

wpforo_forum

CWE

CWE-862

Missing Authorization

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