CVE-2026-12400: CWE-639 Authorization Bypass Through User-Controlled Key in priyanshuchaudhary FlowForms – Conversational Form Builder
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.
AI Analysis
Technical Summary
CVE-2026-12400 is an authorization bypass vulnerability (CWE-639) in the FlowForms – Conversational Form Builder WordPress plugin. The flaw exists in all versions up to 1.1.1 due to lack of validation on a user-controlled key in the update_form REST endpoint. This allows authenticated users with contributor or higher privileges to manipulate any form on the site by specifying arbitrary form IDs, enabling unauthorized modification of content, design, settings, and publishing state of forms, including those owned by administrators.
Potential Impact
The vulnerability allows authenticated users with contributor-level privileges or above to bypass authorization controls and modify any form on the WordPress site. This includes changing form content, design, settings, and publishing status, potentially leading to unauthorized content changes and site behavior manipulation. There is no direct impact on confidentiality or availability reported. The CVSS score is 4.3 (medium severity), reflecting limited impact on integrity without confidentiality or availability loss.
Mitigation Recommendations
No official patch or remediation is currently available for this vulnerability. Users should monitor the vendor's advisory for updates. Until a fix is released, restrict contributor-level access and above to trusted users only to reduce risk. Avoid granting unnecessary privileges to users and consider disabling or replacing the plugin if possible.
CVE-2026-12400: CWE-639 Authorization Bypass Through User-Controlled Key in priyanshuchaudhary FlowForms – Conversational Form Builder
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.
CVSS v3.1
Score 4.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-12400 is an authorization bypass vulnerability (CWE-639) in the FlowForms – Conversational Form Builder WordPress plugin. The flaw exists in all versions up to 1.1.1 due to lack of validation on a user-controlled key in the update_form REST endpoint. This allows authenticated users with contributor or higher privileges to manipulate any form on the site by specifying arbitrary form IDs, enabling unauthorized modification of content, design, settings, and publishing state of forms, including those owned by administrators.
Potential Impact
The vulnerability allows authenticated users with contributor-level privileges or above to bypass authorization controls and modify any form on the WordPress site. This includes changing form content, design, settings, and publishing status, potentially leading to unauthorized content changes and site behavior manipulation. There is no direct impact on confidentiality or availability reported. The CVSS score is 4.3 (medium severity), reflecting limited impact on integrity without confidentiality or availability loss.
Mitigation Recommendations
No official patch or remediation is currently available for this vulnerability. Users should monitor the vendor's advisory for updates. Until a fix is released, restrict contributor-level access and above to trusted users only to reduce risk. Avoid granting unnecessary privileges to users and consider disabling or replacing the plugin if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-06-16T13:34:11.451Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a50b54868715ace4351b344
Added to database: 07/10/2026, 09:03:04 UTC
Last enriched: 07/17/2026, 09:29:01 UTC
Last updated: 08/24/2026, 10:52:07 UTC
Views: 70
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