Arbitrary File Upload Vulnerability in Fluent Boards Pro by WordPress
CVE-2026-78274

9.1CRITICAL

Key Information:

Vendor

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

What is CVE-2026-78274?

Fluent Boards Pro, a popular WordPress plugin, is susceptible to an arbitrary file upload vulnerability in versions up to 2.0.11. This flaw allows attackers to upload malicious files, potentially compromising the server and leading to unauthorized access. It is essential for users of Fluent Boards Pro to update to patched versions to mitigate this risk and safeguard their sites from potential exploitations.

Affected Version(s)

Fluent Boards Pro <= 2.0.11

References

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

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ananda Dhakal (Patchstack) | Patchstack Bug Bounty Program
.