CVE-2026-17196 WebRehab CVE debrief

Who should care

Defenders responsible for WordPress installations with the Super Forms – Drag & Drop Form Builder plugin should assess exposure and prioritize verification and remediation. Defenders should verify the vulnerability in their inventory, assess exposure, and apply the fix. The vulnerability allows authenticated attackers to upload potentially executable files, leading to remote code execution. Defenders should prioritize verifying the vulnerability in their

Why it matters

The Super Forms – Drag & Drop Form Builder plugin vulnerability allows authenticated attackers to upload potentially executable files, leading to remote code execution. Defenders should verify the vulnerability in their inventory, assess exposure, and apply the fix.

• Remote code execution is possible due to the unrestricted file upload vulnerability
• Authenticated attackers with Subscriber-level access can exploit the vulnerability
• The attack requires poisoning the _super_elements post meta via the super_save_form AJAX handler
• Verification of the vulnerability in inventory and application of the fix is necessary

Technical summary

The Super Forms – Drag & Drop Form Builder plugin for WordPress is vulnerable to Unrestricted File Type Upload in all versions up to, and including, 6.3.316 via the upload_files function. This is due to missing file type validation in the upload_files function, which reads and applies an attacker-controlled extensions string from _super_elements post meta verbatim as the allowed MIME type map. This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload files that may be executable, which makes remote code execution possible. The vulnerability allows attackers to upload potentially executable files, leading to remote code execution.

Defensive priority

Defenders should prioritize verifying the vulnerability in their inventory, assessing exposure, and applying the fix.

Recommended defensive actions

• Verify the Super Forms – Drag & Drop Form Builder plugin version in your inventory
• Assess exposure based on the plugin's usage and access controls
• Apply the fix or update to a version beyond 6.3.316
• Monitor for suspicious file uploads and system changes
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and source item provide details on the vulnerability, including the affected versions and the attack vector. Defenders should verify the vulnerability in their inventory, assess exposure, and apply the fix. The attack requires poisoning the _super_elements post meta via the super_save_form AJAX handler, which lacks a capability and nonce check but requires the attacker to be authenticated as at minimum a Subscriber-level user. The subsequent file upload via super_upload_files requires no authentication at all. Evidence

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.