Executive Summary

CVE-2026-24561 is a Broken Access Control vulnerability in the WordPress FluentBoards plugin (versions up to 1.91.1). It occurs due to missing authorization, authentication, or nonce token checks in certain functions, which may allow users with subscriber-level privileges to perform actions that should be restricted to higher-privileged roles. [1]

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Impact Analysis

This vulnerability could allow an attacker with subscriber-level access to perform unauthorized actions within the FluentBoards plugin, potentially leading to privilege escalation or unauthorized modifications. However, the severity is considered low with a CVSS score of 5.4, and exploitation is considered unlikely. [1]

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Detection Guidance

Detection of this vulnerability involves checking for unauthorized access attempts or actions performed by subscriber-level users that should require higher privileges. Since the issue is due to missing authorization checks in certain functions of the FluentBoards plugin, monitoring logs for unusual activity or privilege escalation attempts related to FluentBoards is recommended. Specific commands are not provided in the available resources. [1]

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Mitigation Strategies

Immediate mitigation steps include restricting subscriber-level privileges as much as possible, monitoring for suspicious activity, and applying any available security intelligence or mitigations provided by Patchstack. Since no official fix or patched version is currently available, applying strict access controls and monitoring is advised. [1]

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