Super Forms <= 6.3.316 — Authenticated (Subscriber+) Arbitrary File/Directory Deletion via 'subdir' / 'path' Parameter
CVE-2026-15983Published · Updated Action summary
Affected: ≤6.3.316Update to 6.3.317 or newer
All remediation steps- Severity
- High8.1
- CVSS
- 8.1CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:HIntegrity- High
A:HAvailability- High
- Required access
- Unknown
- Exploit prediction (EPSS)
- 0.5% chance in 30 days44th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
Super Forms – Drag & Drop Form Builder super-forms
- Affected≤ 6.3.316
- Patched in6.3.317
Update to 6.3.317 or newer.
You are affected if you run ≤ 6.3.316. Version 6.3.317 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Super Forms – Drag & Drop Form Builder.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 6.3.317, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Super Forms – Drag & Drop Form Builder to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to d.v4n_s3c.
The Super Forms – Drag & Drop Form Builder plugin for WordPress is vulnerable to Arbitrary File/Directory Deletion in all versions up to, and including, 6.3.316. This is due to the `super_save_form` AJAX handler performing no capability check — allowing Subscriber-level authenticated users to create or modify Super Forms and enable the `file_upload_submission_delete` setting — combined with the `super_submit_form` handler's `submit_form` function passing the attacker-controlled `files[].subdir` value from `$_POST['data']` directly into `SUPER_Common::delete_dir()` without sanitization, and a trivially bypassed `ABSPATH` guard that a `subdir` value of `wp-config.php` defeats because `dirname(realpath(ABSPATH . $subdir))` resolves to the WordPress root while the naive `ABSPATH !== $dir` string check fails to match due to a trailing-slash mismatch. This makes it possible for authenticated attackers, with Subscriber-level access and above, to recursively delete arbitrary files and directories on the server, up to and including the entire WordPress installation, resulting in full site takedown and potential remote code execution if critical files such as `wp-config.php` are removed and the site is subsequently re-installed by another party.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Super Forms – Drag & Drop Form Builder
All 10| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High8.8 | Authenticated (Subscriber+) Arbitrary File Upload via 'extensions' Form Element Attribute ≤6.3.316Update to 6.3.317 | CVE-2026-17196 | |
| Critical9.1 | Unauthenticated Arbitrary Directory Deletion via 'data[...][files][][subdir]' Parameter ≤6.3.316Update to 6.3.317 | CVE-2026-17609 | |
| High8.8 | Authenticated (Subscriber+) Privilege Escalation via 'user_id' Parameter in Register & Login ≤6.3.316Update to 6.3.317 | CVE-2026-15897 | |
| Critical9.1 | Unauthenticated Path Traversal to Arbitrary File Read via 'sfgtfi' URL Path Parameter ≤6.3.316Update to 6.3.317 | CVE-2026-15896 | |
| Critical9.8 | Unauthenticated Privilege Escalation via 'role' Parameter ≤6.3.316Update to 6.3.317 | CVE-2026-15989 |
- High8.8Authenticated (Subscriber+) Arbitrary File Upload via 'extensions' Form Element Attribute
≤6.3.316Update to 6.3.317
- Critical9.1Unauthenticated Arbitrary Directory Deletion via 'data[...][files][][subdir]' Parameter
≤6.3.316Update to 6.3.317
- High8.8Authenticated (Subscriber+) Privilege Escalation via 'user_id' Parameter in Register & Login
≤6.3.316Update to 6.3.317
- Critical9.1Unauthenticated Path Traversal to Arbitrary File Read via 'sfgtfi' URL Path Parameter
≤6.3.316Update to 6.3.317
- Critical9.8Unauthenticated Privilege Escalation via 'role' Parameter
≤6.3.316Update to 6.3.317
Timeline
CVE published
Severity high, CVSS 8.1
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- EPSS
- Exploit Prediction Scoring System by FIRST.org.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.