Authentication Bypass in UpdraftPlus Backup & Migration Plugin
CVE-2026-82841

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Updraftplus: WP Backup & Migration Plugin
Vendor
CVE Published:
27 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-82841?

The UpdraftPlus: WP Backup & Migration Plugin for WordPress allows authenticated users to exploit a lack of adequate capability checks. In certain post-migration states, stored remote storage settings are exposed on admin pages, enabling unauthorized access to sensitive backup credentials like passwords and secret keys. This vulnerability emphasizes the need for robust checks to prevent unauthorized data exposure.

Affected Version(s)

UpdraftPlus: WP Backup & Migration Plugin 1.23.8 < 1.26.8

UpdraftPlus: WP Backup & Migration Plugin 2.23.8 < 2.26.8.26

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-2026-82841 - Proof of Concept

References

https://wpscan.com/vulnerability/52f39a82-89ee-43f1-ba9c-...
exploitvdb-entrytechnical-description

CVSS V3.1

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

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jakub Herman
WPScan
.