CVE-2025-4855CWE-639

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

Critical · published July 8, 2025

CVSS v3.1
9.8
EPSS
0%
Percentile
31.3
In the wild
Unconfirmed
What it is

🚨 A hardcoded default secret is the open door no one thought to lock! This vulnerability in the Support Board plugin for WordPress allows unauthorized access to critical data! 🔥 Think of it like a hotel with a master key left lying around — anyone can let themselves into any room, wreaking havoc without anyone noticing. The plugin's use of unprotected secrets is like that key, letting attackers waltz right in and control your site! An attacker can bypass authorization entirely, allowing them to modify or delete your data at will. This could lead to anything from corrupting your site's content to executing arbitrary actions that could cripple your operations. The potential chaos is absolutely devastating!

Put simply

Think of it like a hotel with a master key left lying around — anyone can let themselves into any room, wreaking havoc without anyone noticing. The plugin's use of unprotected secrets is like that key, letting attackers waltz right in and control your site! This vulnerability stems from the use of hardcoded default secrets in the sb_encryption() function of the Support Board plugin, enabling unauthenticated users to trigger AJAX actions defined in sb_ajax_execute(). In other words, it's a free-for-all for attackers looking to exploit sensitive functions.

What to do

An attacker can bypass authorization entirely, allowing them to modify or delete your data at will. This could lead to anything from corrupting your site's content to executing arbitrary actions that could cripple your operations. The potential chaos is absolutely devastating! Immediately update the Support Board plugin to version 3.8.1 or later to patch this vulnerability. Additionally, review your site's security practices, such as using unique secrets and limiting access where possible. Don't forget to monitor for any suspicious activity! You've got this! By taking these steps, you're on the fast track to securing your site like a true security hero! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00385 · 31.3th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2025-07-08T23:22Z
EPSS history
Timeline
  • 08 JUL 23:22Z
    Support Board <= 3.8.0 - Unauthenticated Authorization Bypass due to Use of Default Secret Key
    cvelistv5