Arbitrary File Upload Vulnerability in MStore API by WordPress
CVE-2021-47933

9.3CRITICAL

Key Information:

Vendor

WordPress
Status
Mstore Api
Vendor
CVE Published:
10 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47933?

The MStore API version 2.0.6 for WordPress is susceptible to an arbitrary file upload vulnerability. Unauthenticated attackers can exploit this weakness by crafting POST requests directed at the REST API endpoint, specifically the config_file endpoint. This flaw allows attackers to upload malicious PHP files to the server, potentially enabling remote code execution and compromising the integrity of the affected website. Immediate action is essential to mitigate this risk and secure your WordPress environment.

Affected Version(s)

MStore API 2.0.6

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-2021-47933 - Proof of Concept

References

https://www.exploit-db.com/exploits/50379
exploit
https://wordpress.org/plugins/mstore-api/
product
https://www.vulncheck.com/advisories/wordpress-mstore-api...
third-party-advisory

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

spacehen
.