Support Board < 3.8.9 - Unauthenticated Privilege Escalation

9.8
Incorrect Privilege Assignment
CVE CVE-2026-27395
CVSS 9.8 (Critical)
Publicly Published June 1, 2026
Last Updated June 11, 2026
Researcher Phat RiO

Description

The Support Board plugin for WordPress is vulnerable to Privilege Escalation in all versions up to 3.8.9 (exclusive). This makes it possible for unauthenticated attackers to elevate their privileges.

References

Share

Vulnerability Details for Support Board

Software Type Plugin
Software Slug supportboard
Patched? Yes
Remediation Update to version 3.8.9, or a newer patched version
Affected Version
  • < 3.8.9
Patched Version
  • 3.8.9

Recent vulnerabilities in Support Board

# Title CVE ID CVSS Researchers Date
1 Support Board < 3.8.7 - Reflected Cross-Site Scripting CVE-2025-60182 6.1 Trương Hữu Phúc (truonghuuphuc) July 31, 2025
2 Support Board <= 3.8.0 - Reflected Cross-Site Scripting CVE-2025-54027 6.1 Tran Nguyen Bao Khanh July 23, 2025
3 Support Board <= 3.8.0 - Unauthenticated Local File Inclusion CVE-2025-54031 8.1 Tran Nguyen Bao Khanh July 22, 2025
4 Support Board <= 3.8.0 - Unauthenticated Arbitrary File Deletion CVE-2025-4828 9.8 Foxyyy July 8, 2025
5 Support Board <= 3.8.0 - Unauthenticated Authorization Bypass due to Use of Default Secret Key CVE-2025-4855 9.8 Foxyyy July 8, 2025
6 Support Board <= 3.4.1 - Authenticated SQL Injection 8.8 zhangxf January 19, 2022
7 Support Board < 3.3.6 - Cross-Site Request Forgery CVE-2021-24823 8.1 Brandon James Roldan (tomorrowisnew) October 18, 2021
8 Support Board <= 3.3.4 - Agent+ Stored Cross-Site Scripting CVE-2021-24807 6.4 John Jefferson Li October 7, 2021
9 Support Board <= 3.3.3 - Multiple Unauthenticated SQL Injections CVE-2021-24741 9.8 John Jefferson Li September 3, 2021
10 Support Board <= 1.2.8 - Authenticated Stored Cross-Site Scripting 6.4 R3N0 June 11, 2019

Did you know Wordfence Intelligence provides free personal and commercial API access to our comprehensive WordPress vulnerability database, along with a free webhook integration to stay on top of the latest vulnerabilities added and updated in the database? Get started today!

Learn more

Want to get notified of the latest vulnerabilities that may affect your WordPress site?
Install Wordfence on your site today to get notified immediately if your site is affected by a vulnerability that has been added to our database.

Get Wordfence

The Wordfence Intelligence WordPress vulnerability database is completely free to access and query via API. Please review the documentation on how to access and consume the vulnerability data via API.

Documentation