Privilege Escalation in FluentBoards WordPress Plugin
CVE-2026-89328

3.8LOW

Key Information:

Vendor

WordPress
Status
Fluentboards
Vendor
CVE Published:
16 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-89328?

The FluentBoards WordPress plugin prior to version 2.0.15 is susceptible to privilege escalation due to improper verification of user permissions. Specifically, it fails to ensure that users possess the necessary board-manager privileges before allowing them to execute critical board-management tasks. This vulnerability exposes boards to unauthorized manipulation by any member, enabling them to carry out sensitive operations such as adjusting member roles and altering privacy settings of boards.

Affected Version(s)

FluentBoards 0 < 2.0.15

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-89328 - Proof of Concept

References

https://wpscan.com/vulnerability/07c4ebd6-1cf9-4951-a89b-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
3.8
Severity:
LOW
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

vuxvinh
WPScan
.