# CVE-2026-89328: FluentBoards privilege escalation in board management

Source: https://junglewise.ai/threats/cve-2026-89328-fluentboards-privilege-escalation-in-board-management  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-16. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-89328 · Severity: low · CVSS 3.8 · Published 2026-09-16

FluentBoards is a popular WordPress plugin for collaborative board management. A flaw in the plugin allows any member of a board to perform administrator-level actions—such as adding or removing members and making private boards public—without holding the required manager privileges. This could enable unauthorized users to compromise board membership and visibility.

Technologies: [FluentBoards](https://junglewise.ai/threats/technologies/fluentboards). Vendors: [FluentBoards](https://junglewise.ai/threats/vendors/fluentboards).

## Quick answers

**Is CVE-2026-89328 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-89328 being exploited in the wild.

**How severe is CVE-2026-89328?** Low severity, with a CVSS score of 3.8, published 16 September 2026.

**Which products and versions are affected?** FluentBoards before 2.0.15.

**Is there a fix for CVE-2026-89328?** A patch was published on 2026-09-15: version 2.0.15 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-89328 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-89328?** Check whether you run FluentBoards at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a broken access control (CWE-284) in FluentBoards before version 2.0.15. The plugin fails to verify board-manager privileges before performing sensitive board-management operations, checking only board membership instead. An authenticated attacker who is a member of a target board can exploit this to perform manager-only actions, including adding/removing members and toggling public access on private boards. The vulnerability requires the attacker to be authenticated as a board member; no network-level exploit is possible. A fix is available in version 2.0.15 and later.

## Affected products

- FluentBoards FluentBoards before 2.0.15

## Timeline

- 2026-09-14: disclosed
- 2026-09-15: patched: version 2.0.15

## References

- [https://wpscan.com/vulnerability/07c4ebd6-1cf9-4951-a89b-4288d10b0df1/](https://wpscan.com/vulnerability/07c4ebd6-1cf9-4951-a89b-4288d10b0df1/)

## Related threats

- [FluentBoards privilege escalation](https://junglewise.ai/threats/cve-2026-96821-subscriber-privilege-escalation-in-fluentboards-2-0-12-versions)
- [FluentBoards comment author spoofing via comment_by parameter](https://junglewise.ai/threats/cve-2026-89327-fluentboards-comment-author-spoofing-via-comment-by-parameter)
- [FluentBoards WordPress plugin authorization bypass in board membership](https://junglewise.ai/threats/cve-2026-85349-fluentboards-wordpress-plugin-authorization-bypass-in-board)
- [FluentBoards WordPress plugin insecure direct object reference in board import](https://junglewise.ai/threats/cve-2026-14938-fluentboards-wordpress-plugin-insecure-direct-object-reference-in)