User Frontend <= 4.3.7 — Missing Authorization to Unauthenticated Arbitrary Attachment Deletion via 'attach_id' Parameter
CVE-2026-12406Published · Updated Action summary
Affected: ≤4.3.7Update to 4.3.8 or newer
All remediation steps- Severity
- Medium5.3
- CVSS
- 5.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-862 Missing Authorization
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission wp-user-frontend
- Affected≤ 4.3.7
- Patched in4.3.8
Update to 4.3.8 or newer.
You are affected if you run ≤ 4.3.7. Version 4.3.8 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 4.3.8, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to mrvincere.
The User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.3.7. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to delete arbitrary media attachments whose post_author is 0, such as guest and registration-form uploads, via the wpuf_file_del AJAX action. This is exploitable by unauthenticated visitors on any site where a WPUF shortcode is rendered on a front-end page, as this causes the valid wpuf_nonce value to be localized into publicly accessible JavaScript objects (wpuf_upload and wpuf_frontend), satisfying the sole access control gate. CVE-2026-14568 is a duplicate of this.
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 User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission
All 43| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Taxonomy Field Text-Input ≤4.3.13Update to 4.3.14 | CVE-2026-109214 | |
| Medium6.1 | Reflected Cross-Site Scripting via 'field_attr[required]' Parameter ≤4.3.13Update to 4.3.14 | CVE-2026-103962 | |
| High8.8 | Authenticated (Subscriber+) Privilege Escalation via post_content Parameter ≤4.3.13Update to 4.3.14 | CVE-2026-120070 | |
| Medium4.3 | Missing Authorization ≤4.3.13Update to 4.3.14 | CVE-2026-52708 | |
| Medium5.3 | Missing Authorization ≤4.3.13Update to 4.3.14 | CVE-2026-48884 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Taxonomy Field Text-Input
≤4.3.13Update to 4.3.14
- Medium6.1Reflected Cross-Site Scripting via 'field_attr[required]' Parameter
≤4.3.13Update to 4.3.14
- High8.8Authenticated (Subscriber+) Privilege Escalation via post_content Parameter
≤4.3.13Update to 4.3.14
- Medium4.3Missing Authorization
≤4.3.13Update to 4.3.14
- Medium5.3Missing Authorization
≤4.3.13Update to 4.3.14
Same weakness (Missing Authorization)
All Missing Authorization| 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 medium, CVSS 5.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. 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.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.