Super Forms <= 6.3.316 — Authenticated (Subscriber+) Arbitrary File Upload via 'extensions' Form Element Attribute
CVE-2026-17196Published · Updated Action summary
Affected: ≤6.3.316Update to 6.3.317 or newer
All remediation steps- Severity
- High8.8
- CVSS
- 8.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Weakness
- CWE-434 Arbitrary File Upload
- 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 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 attack requires a preceding step: 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.
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 |
|---|---|---|---|
| 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 | |
| High8.1 | Authenticated (Subscriber+) Arbitrary File/Directory Deletion via 'subdir' / 'path' Parameter ≤6.3.316Update to 6.3.317 | CVE-2026-15983 | |
| Critical9.8 | Unauthenticated Privilege Escalation via 'role' Parameter ≤6.3.316Update to 6.3.317 | CVE-2026-15989 |
- 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
- High8.1Authenticated (Subscriber+) Arbitrary File/Directory Deletion via 'subdir' / 'path' Parameter
≤6.3.316Update to 6.3.317
- Critical9.8Unauthenticated Privilege Escalation via 'role' Parameter
≤6.3.316Update to 6.3.317
Same weakness (Arbitrary File Upload)
All Arbitrary File Upload| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity high, CVSS 8.8
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.