CVE-2026-12400 Missing authorization in FlowForms – Conversational Form Builder
Authenticated contributors can modify or publish any form, including admin-owned ones, via insecure direct object reference in the REST API.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-12400?
CVE-2026-12400 is a medium-severity missing authorization vulnerability in priyanshuchaudhary FlowForms – Conversational Form Builder, published on 10 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The FlowForms – Conversational Form Builder plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.1.1 via the update_form due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with contributor-level access and above, to modify the content, design, and settings of, as well as publish or revert, any form on the site — including forms owned by administrators — by supplying an arbitrary form ID in the REST URL.
Weakness: CWE-639
Which versions are affected by CVE-2026-12400?
How do I fix CVE-2026-12400?
No fix has been published for CVE-2026-12400 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-12400 being exploited?
There is no known exploitation of CVE-2026-12400 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-qcj5-mp4w-93gp.