Vulnerability Description
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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gvectors | Wpforo Forum | >= 2.4.0, < 2.4.16 |
Related Weaknesses (CWE)
References
- https://wordpress.org/plugins/wpforo/Product
- https://wordpress.org/plugins/wpforo/#developersRelease Notes
- https://www.vulncheck.com/advisories/wpforo-forum-privilege-escalation-via-role-Third Party Advisory
FAQ
What is CVE-2026-28557?
CVE-2026-28557 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 a...
How severe is CVE-2026-28557?
CVE-2026-28557 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-28557?
Check the references section above for vendor advisories and patch information. Affected products include: Gvectors Wpforo Forum.