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