Arbitrary file upload in Contact Form 7 - CVE-2020-35489
Published: October 22, 2024 / Updated: November 4, 2024
Vulnerability identifier: #VU99242
CSH Severity: Critical
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-35489
CWE-ID: CWE-434
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to insufficient validation of file during file upload. A remote attacker can upload a malicious file and execute it on the server.
Affected software
Contact Form 7
How to mitigate CVE-2020-35489
Install updates from vendor's website.
Contact Form 7 - update to 5.3.2
Links to Public Exploits and PoC-codes
External References
- https://contactform7.com/2020/12/17/contact-form-7-532/
- https://wordpress.org/plugins/contact-form-7/#developers
- https://wpscan.com/vulnerability/10508
- https://www.getastra.com/blog/911/plugin-exploit/contact-form-7-unrestricted-file-upload/
- https://www.jinsonvarghese.com/unrestricted-file-upload-in-contact-form-7/