Unrestricted File Upload Issue in Contact Form 7 Plugin for WordPress
CVE-2020-35489

10CRITICAL

Key Information:

Vendor
Wordpress
Status
Contact Form 7
Vendor
CVE Published:
17 December 2020

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 90%

Summary

The Contact Form 7 plugin prior to version 5.3.2 for WordPress is susceptible to an unrestricted file upload vulnerability. This issue arises from improper handling of filenames that may contain special characters, potentially allowing attackers to upload malicious files. If successfully exploited, this vulnerability can lead to remote code execution, risking the security and integrity of the server hosting the WordPress site. It is crucial for users to update to the latest version to mitigate this threat.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

Check-WP-CVE-2020-35489
Created by dn9uy3n

wp_CVE-2020-35489_checker
Created by reneoliveirajr

References

https://wordpress.org/plugins/contact-form-7/#developers
x_refsource_MISC
https://www.getastra.com/blog/911/plugin-exploit/contact-...
x_refsource_MISC
https://contactform7.com/2020/12/17/contact-form-7-532/
x_refsource_MISC

EPSS Score

90% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
10
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.