CVE-2026-28557

MEDIUM 6.5

wpForo Forum 2.4.14 Privilege Escalation via Role Synchronization Handler

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-862
Vendor	gvectors team
Product	wpforo forum
Published	Feb 28, 2026
Last Updated	Mar 6, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Affected Versions

gVectors Team / wpForo Forum

2.4 < 2.4.16

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordpress.org: https://wordpress.org/plugins/wpforo/ wordpress.org: https://wordpress.org/plugins/wpforo/#developers vulncheck.com: https://www.vulncheck.com/advisories/wpforo-forum-privilege-escalation-via-role-synchronization-handler

Credits

Scott Moore - VulnCheck