Unrestricted File Upload Vulnerability in WP Super Edit by WordPress
CVE-2021-47965

9.3CRITICAL

Key Information:

Vendor

WordPress
Status
WP Super Edit
Vendor
CVE Published:
15 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47965?

The WP Super Edit plugin versions 2.5.4 and earlier for WordPress is susceptible to an unrestricted file upload vulnerability in the FCKeditor component. This security flaw allows unauthorized users to upload potentially malicious files to the server via the filemanager upload endpoint. The lack of input validation may lead to remote code execution, posing a serious threat to affected systems and potentially enabling attackers to gain full control over compromised installations.

Affected Version(s)

WP Super Edit 2.5.4

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.

CVE-2021-47965 - Proof of Concept

References

https://www.exploit-db.com/exploits/49839
exploit
https://wordpress.org
product
https://wordpress.org/plugins/wp-super-edit/
product

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

h4shur
.