PHP Object Injection Vulnerability in Fluent Boards Pro by WordPress
CVE-2026-78276

7.2HIGH

Key Information:

Vendor

WordPress
Status
Fluent Boards Pro
Vendor
CVE Published:
27 August 2026

What is CVE-2026-78276?

A PHP Object Injection vulnerability exists in Fluent Boards Pro versions up to 2.0.11. This vulnerability can allow unauthorized users to exploit the application's object serialization processes, potentially leading to unauthorized access to sensitive data or the execution of malicious actions. Website administrators using this plugin should take immediate steps to secure their installations and update to the latest version to mitigate risks associated with this vulnerability.

Affected Version(s)

Fluent Boards Pro <= 2.0.11

References

https://patchstack.com/database/wordpress/plugin/fluent-b...
vdb-entry

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ananda Dhakal (Patchstack) | Patchstack Bug Bounty Program
.