CVE-2026-89327: CWE-290 Authentication Bypass by Spoofing in FluentBoards
CVE-2026-89327 is an authentication bypass vulnerability in the FluentBoards WordPress plugin before version 2.0.15. The plugin fails to verify that a board member submitting a comment is the actual user attributed as the comment author. This flaw allows any board member to impersonate other users, including administrators, by posting comments under their identities.
AI Analysis
Technical Summary
The FluentBoards WordPress plugin versions prior to 2.0.15 contain an authentication bypass vulnerability (CWE-290) where the plugin does not verify the identity of a board member submitting a comment. This allows any board member to spoof the author field of comments, effectively impersonating other users, including those with administrative privileges.
Potential Impact
An attacker who is a board member can post comments that appear to be authored by any other user, including administrators. This could lead to misinformation, unauthorized actions attributed to privileged users, and potential trust and integrity issues within the board environment.
Mitigation Recommendations
Upgrade FluentBoards to version 2.0.15 or later where this vulnerability is fixed. Since no patch links are provided, verify with the vendor or official plugin repository for the availability of the fixed version. Until then, restrict board member permissions to trusted users only.
CVE-2026-89327: CWE-290 Authentication Bypass by Spoofing in FluentBoards
Description
CVE-2026-89327 is an authentication bypass vulnerability in the FluentBoards WordPress plugin before version 2.0.15. The plugin fails to verify that a board member submitting a comment is the actual user attributed as the comment author. This flaw allows any board member to impersonate other users, including administrators, by posting comments under their identities.
Affected software
FluentBoards
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The FluentBoards WordPress plugin versions prior to 2.0.15 contain an authentication bypass vulnerability (CWE-290) where the plugin does not verify the identity of a board member submitting a comment. This allows any board member to spoof the author field of comments, effectively impersonating other users, including those with administrative privileges.
Potential Impact
An attacker who is a board member can post comments that appear to be authored by any other user, including administrators. This could lead to misinformation, unauthorized actions attributed to privileged users, and potential trust and integrity issues within the board environment.
Mitigation Recommendations
Upgrade FluentBoards to version 2.0.15 or later where this vulnerability is fixed. Since no patch links are provided, verify with the vendor or official plugin repository for the availability of the fixed version. Until then, restrict board member permissions to trusted users only.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-09-11T15:02:49.672Z
- State
- PUBLISHED
Threat ID: 6aaa32e555bf5e2cf517fb61
Added to database: 09/16/2026, 06:10:45 UTC
Last enriched: 09/16/2026, 06:17:14 UTC
Last updated: 09/16/2026, 06:34:26 UTC
Views: 4
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