Subscription Management Flaw in Fluent Forms Plugin for WordPress
CVE-2026-11880

3.1LOW

Key Information:

Vendor

WordPress
Status
Fluent Forms
Vendor
CVE Published:
1 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-11880?

The Fluent Forms plugin for WordPress prior to version 6.2.1 contains a vulnerability that allows low-privilege authenticated users to cancel subscriptions of other users. This flaw arises because the plugin fails to adequately verify the ownership of subscriptions before processing cancellation requests, potentially leading to unauthorized actions and user disruptions.

Affected Version(s)

Fluent Forms 0 < 6.2.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-11880 - Proof of Concept

References

https://wpscan.com/vulnerability/5de7c9e9-3a47-4bc6-a1b2-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
3.1
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Pedro Pinho
WPScan
.