Unauthorized Data Modification in Total Upkeep Plugin by BoldGrid
CVE-2026-3143

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Total Upkeep – WordPress Backup Plugin Plus Restore & Migrate By Boldgrid
Vendor
CVE Published:
1 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-3143?

The Total Upkeep – WordPress Backup Plugin plus Restore & Migrate by BoldGrid is susceptible to unauthorized data modification due to a missing capability check on the 'wp_ajax_cli_cancel' function. This flaw affects all versions up to and including 1.17.1, allowing unauthenticated attackers to cancel unresolved rollback actions. Such exploitation may prevent a WordPress site from recovering from failed updates, posing significant risks to site stability and data integrity.

Affected Version(s)

Total Upkeep – WordPress Backup Plugin plus Restore & Migrate by BoldGrid 0 <= 1.17.1

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.

fix-cve-2026-3143
Created by ClimbMunchkin

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/boldgrid-backu...
https://plugins.trac.wordpress.org/browser/boldgrid-backu...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Nabil Irawan
.