SB20260427103 - Arbitrary file upload in Drag and Drop File Upload for Contact Form 7 plugin for WordPress
Published: April 27, 2026
Security Bulletin ID
SB20260427103
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Arbitrary file upload (CVE-ID: CVE-2026-5364)
CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type
CVSSv4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to insufficient validation of file during file upload within sanitize_file_name. A remote attacker can upload a malicious file and execute it on the server.
Remediation
Install update from vendor's website.