wpmanageninja Fluent Forms Plugin up to 6.2.1 Payment Cancellation subscription_id improper authorization

Summaryinfo

A vulnerability has been found in wpmanageninja Fluent Forms Plugin up to 6.2.1 and classified as critical. Affected is an unknown function of the component Payment Cancellation. The manipulation of the argument subscription_id leads to improper authorization. This vulnerability is uniquely identified as CVE-2026-5069. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in wpmanageninja Fluent Forms Plugin up to 6.2.1. It has been rated as critical. This issue affects an unknown part of the component Payment Cancellation. The manipulation of the argument subscription_id with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The Fluent Forms plugin for WordPress is vulnerable to incorrect authorization via the 'subscription_id' parameter in versions up to, and including, 6.2.1. This is due to insufficient ownership authorization checks in the payment cancellation AJAX flow. This makes it possible for authenticated attackers, with subscriber-level access and above, to submit cancellation requests for other users' subscriptions.

It is possible to read the advisory at wordfence.com. The identification of this vulnerability is CVE-2026-5069 since 03/27/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/10/2026). The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• wpmanageninja

Name

• Fluent Forms Plugin

Version

• 6.2.0
• 6.2.1

CPE 2.3info

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CPE 2.2info

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