Quick answers
- Is CVE-2026-89327 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-89327 being exploited in the wild.
- How severe is CVE-2026-89327?
- 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-2026-89327?
- A patch was published on 2026-09-15: Version 2.0.15 available Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-89327 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-89327?
- 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 flaw (CWE-290) in the comment submission functionality. The plugin does not validate the 'comment_by' parameter, allowing an authenticated board member to forge the author field of comments they submit. Attack precondition is board member access; the attacker can then craft requests specifying any other user (including admins) as the comment author. The vulnerability affects versions before 2.0.15 and has been patched in 2.0.15.
Affected products
- FluentBoards FluentBoards before 2.0.15
Timeline
- 2026-09-14: disclosed
- 2026-09-15: patched: Version 2.0.15 available