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FluentBoards - Security Vulnerability (CVE-2026-89327)

CVE-2026-89327

Vulnerability CVE-2026-89327 PLUGIN fluentboards LOW

The FluentBoards WordPress plugin before 2.0.15 does not verify that a board member submitting a comment is the user the comment is attributed to, allowing any board member to post comments that appear to be authored by another user, including administrators.

CVE-2026-89327

LOW CVSS 3.8 Published 2026-09-16 Updated 2026-09-17
AI Risk Low (32/100) Active Exploit: No strong signal Published Exploit: No public exploit references Priority: P5 Monitor
Severity Band LOW
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Affected Components 1
Reference Links 1
AI Risk Engine Low (32/100)
Exploitability Low
Active Exploitation No strong signal
Published Exploit Status No public exploit references

Threat Timeline

  1. 2026-09-16 CVE published and first recorded in the threat feed.
  2. 2026-09-17 Record updated with latest vulnerability metadata.
  3. 2026-09-21 AI technical context refreshed for mitigation and impact guidance.
  4. Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated just now

AI enriched just now (2026-09-21 20:06 UTC)

Technical Summary

The FluentBoards WordPress plugin before 2.0.15 does not verify that a board member submitting a comment is the user the comment is attributed to, allowing any board member to post comments that appear to be authored by another user, including administrators.

Potential Impact

Severity is LOW (CVSS 3.8). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as Low based on severity and technical exposure profile.

Primary risk drivers: severity and technical exposure profile

Mitigation Recommendations

Validate affected product versions, prioritize patching, and monitor references for vendor remediation guidance. If immediate patching is not possible, apply compensating controls and limit exposure of vulnerable surfaces.

Detection & Monitoring

Track authentication anomalies, unexpected file writes, and suspicious plugin API activity around affected components.

Business Impact Lens

AI risk score 32/100 (Low, Low) with priority P5 Monitor. Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

FluentBoards PLUGIN · fluentboards Affected: < 2.0.15 Fixed in: 2.0.15

References

What to do about this

Low priority Contained impact, or it needs privileges an attacker would rarely already hold.

Fix it

Update FluentBoards to 2.0.15 or later.

That is the complete fix. Everything below is what protects you in the meantime.

No Hack Halt control meaningfully contains this one — updating is the remedy. We would rather say so than sell you something that will not help.

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Not sure if you are affected?

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Am I affected by this vulnerability?

You are affected if your site runs FluentBoards. Versions below 2.0.15 are vulnerable; that release and later are not.

How do I fix it?

Update FluentBoards to version 2.0.15 or later. That is the complete fix.

WordPress security that blocks attacks before they land.

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