Fluent Boards Pro <= 2.0.11 — Authenticated (Subscriber+) Insecure Direct Object Reference
CVE-2026-78278Published · Updated Action summary
Affected: ≤2.0.11Update to 2.0.12 or newer
All remediation steps- Severity
- Medium4.3
- CVSS
- 4.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Fluent Boards Pro fluent-boards-pro
- Affected≤ 2.0.11
- Patched in2.0.12
Update to 2.0.12 or newer.
You are affected if you run ≤ 2.0.11. Version 2.0.12 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Fluent Boards Pro.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 2.0.12, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Fluent Boards Pro to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Ananda Dhakal.
The Fluent Boards Pro plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.0.11 due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to perform an unauthorized action.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Fluent Boards Pro
All 5| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Authenticated (Editor+) Arbitrary File Upload ≤2.0.11Update to 2.0.12 | CVE-2026-78274 | |
| Medium6.5 | Authenticated (Editor+) Arbitrary File Deletion ≤2.0.11Update to 2.0.12 | CVE-2026-78275 | |
| Medium6.4 | Authenticated (Subscriber+) Stored Cross-Site Scripting ≤2.0.11Update to 2.0.12 | CVE-2026-78273 | |
| Medium6.6 | Authenticated (Editor+) PHP Object Injection ≤2.0.11Update to 2.0.12 | CVE-2026-78276 |
- High7.2Authenticated (Editor+) Arbitrary File Upload
≤2.0.11Update to 2.0.12
- Medium6.5Authenticated (Editor+) Arbitrary File Deletion
≤2.0.11Update to 2.0.12
- Medium6.4Authenticated (Subscriber+) Stored Cross-Site Scripting
≤2.0.11Update to 2.0.12
- Medium6.6Authenticated (Editor+) PHP Object Injection
≤2.0.11Update to 2.0.12
Timeline
CVE published
Severity medium, CVSS 4.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.