CVE-2026-40784 WordPress FluentBoards plugin <= 1.91.2 - Insecure Direct Object References (IDOR) vulnerability
Attackers can bypass access controls to read or modify data in the FluentBoards WordPress plugin via insecure direct object references.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-40784?
CVE-2026-40784 is a high-severity missing authorization vulnerability in Mahmudul Hasan Arif FluentBoards, published on 15 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Authorization Bypass Through User-Controlled Key vulnerability in Mahmudul Hasan Arif FluentBoards fluent-boards allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects FluentBoards: from n/a through <= 1.91.2.
Weakness: CWE-639
Which versions are affected by CVE-2026-40784?
How do I fix CVE-2026-40784?
No fix has been published for CVE-2026-40784 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-40784 being exploited?
There is no known exploitation of CVE-2026-40784 in the wild and no public exploit code.
Sources
Also known as GHSA-x75g-qm53-h84r.