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Description

The Support Board plugin for WordPress is vulnerable to unauthorized access/modification/deletion of data due to use of hardcoded default secrets in the sb_encryption() function in all versions up to, and including, 3.8.0. This makes it possible for unauthenticated attackers to bypass authorization and execute arbitrary AJAX actions defined in the sb_ajax_execute() function. An attacker can use this vulnerability to exploit CVE-2025-4828 and various other functions unauthenticated.

PUBLISHED Reserved 2025-05-16 | Published 2025-07-08 | Updated 2026-04-08 | Assigner Wordfence




CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-639 Authorization Bypass Through User-Controlled Key

Product status

Default status
unaffected

Any version
affected

Timeline

2025-05-15:Discovered
2025-07-07:Vendor Notified
2025-07-08:Disclosed

Credits

Friderika Baranyai finder

References

www.wordfence.com/...-d490-4a3e-97fc-70cf008cbf66?source=cve

codecanyon.net/.../support-board-help-desk-and-chat/20359943

cve.org (CVE-2025-4855)

nvd.nist.gov (CVE-2025-4855)

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