Quick answers
- Is CVE-2026-11578 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-11578 being exploited in the wild.
- How severe is CVE-2026-11578?
- Informational severity, with a CVSS score of 2.7, published 2 July 2026.
- Which products and versions are affected?
- WPManageNinja Fluent Forms before 6.2.5.
- Is there a fix for CVE-2026-11578?
- A patch was published on 2026-06-11: Fixed in version 6.2.5 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-11578 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-11578?
- 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 bulk-actions endpoint of the Fluent Forms REST API. The plugin fails to validate that the submission entry IDs provided in the 'entries[]' array actually belong to the 'form_id' specified in the request. An attacker with 'Manager' privileges (which can be assigned to users with roles as low as Subscriber) can provide a 'form_id' they are authorized to manage while supplying entry IDs from unauthorized forms. This bypasses the per-form access control check, allowing the permanent deletion of arbitrary form submissions via the 'other.delete_permanently' action. The issue is fixed in version 6.2.5.
Affected products
- WPManageNinja Fluent Forms before 6.2.5
Timeline
- 2026-06-11: disclosed
- 2026-06-11: patched: Fixed in version 6.2.5
- 2026-07-02: advisory