CVE-2026-12400

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.

CVSS v3.1

4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS

0.37% chance of exploitation in the next 30 days, 30th percentile

Published

2026-07-10

Updated

2026-07-14

Proof-of-concept exploits (1)

• 0x00phantom-hat/CVE-2026-12400-Exploit1★ · 2026-07-09

References

• CVE Record
• NVD entry

Related

• CVE-2023-6553
• CVE-2023-6972
• CVE-2025-54123
• CVE-2026-5029
• CVE-2026-12397
• CVE-2026-12415