Arbitrary File Deletion in Backup and Restore Plugin for WordPress
CVE-2021-47979

8.7HIGH

Key Information:

Vendor

WordPress
Status
Backup And Restore
Vendor
CVE Published:
16 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47979?

The Backup and Restore Plugin for WordPress version 1.0.3 is vulnerable to an arbitrary file deletion flaw. This vulnerability allows authenticated users to manipulate AJAX requests and delete files from the WordPress installation. By crafting specific POST requests to the admin-ajax.php endpoint, attackers can exploit this weakness and potentially compromise the integrity of the website by removing essential files.

Affected Version(s)

Backup and Restore 1.0.3

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-2021-47979 - Proof of Concept

References

https://www.exploit-db.com/exploits/50503
exploit
https://www.miniorange.com/
product
https://wordpress.org/plugins/backup-and-restore-for-wp/
product

CVSS V4

Score:
8.7
Severity:
HIGH
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

Murat DEMIRCI (@butterflyhunt3r)
.