Quick answers
- Is CVE-2026-11880 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-11880 being exploited in the wild.
- How severe is CVE-2026-11880?
- Informational severity, with a CVSS score of 4.3, published 1 July 2026.
- Which products and versions are affected?
- WPManageNinja Fluent Forms before 6.2.1.
- Is there a fix for CVE-2026-11880?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-11880 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-11880?
- Check whether you run WPManageNinja Fluent Forms at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An Insecure Direct Object Reference (IDOR) vulnerability exists in the Fluent Forms plugin due to insufficient authorization checks in the 'cancel_transaction' route of the 'fluentform_user_payment_endpoints' AJAX action. While the plugin requires a valid nonce, it fails to verify that the 'subscription_id' provided in the POST request belongs to the currently authenticated user. An attacker with a low-privilege Subscriber account and their own active subscription can obtain a valid nonce and then submit a request to cancel any other user's subscription by providing the victim's ID. This issue is fixed in version 6.2.1.
Affected products
- WPManageNinja Fluent Forms before 6.2.1
Timeline
- 2026-06-10: disclosed
- 2026-06-10: advisory
- 2026-07-01: other: NVD publication date