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CVE-2026-28557: wpforo forum vulnerability
CVE-2026-28557: high vulnerability affecting wpforo forum. Check CVSS, KEV status, business impact and recommended administrator actions.
- CVSS
- 7.1 HIGH
- EPSS
- 19.5%
- Known exploited
- not in KEV
- Product
- wpforo forum
What is known
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.
Business impact
Successful exploitation of CVE-2026-28557, a high vulnerability (CVSS 7.1) affecting wpforo forum, may affect the confidentiality, integrity or availability of the vulnerable environment. The exact impact depends on the installed version, exposed interfaces and deployment configuration.
Recommended administrator action
Confirm whether wpforo forum is present and compare installed versions with the vendor advisory and NVD record. Apply the vendor patch or documented mitigation; until remediation is complete, reduce exposure of affected interfaces, review relevant logs and monitor for indicators of exploitation. DataHouse can support version verification, managed patching, network exposure reduction, log review and backup validation for dedicated, cloud and colocated environments.