What’s Vulnerable › Vulnerabilities

CVE-2025-4855: Support Board <= 3.8.0 - Unauthenticated Authorization Bypass due to Use of Default Secret Key

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-09 · updated 2026-06-17
• Weakness: CWE-639

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.

Affected products

• Schiocco Support Board: before 3.8.1 — fixed in 3.8.1

How to fix

Upgrade to a fixed version: Schiocco Support Board 3.8.1. Check the vendor advisory for mitigations.

References

• https://codecanyon.net/item/support-board-help-desk-and-chat/20359943
• https://www.wordfence.com/threat-intel/vulnerabilities/id/afd48bc8-d490-4a3e-97fc-70cf008cbf66?source=cve

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