Improper Role Verification in JetBackup WordPress Plugin
CVE-2026-19453

7.1HIGH

Key Information:

Vendor

WordPress
Status
Jetbackup
Vendor
CVE Published:
2 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-19453?

The JetBackup plugin for WordPress, specifically versions prior to 3.1.23.5, lacks adequate checks on user role and capabilities during the restore or migration process. This flaw potentially allows users with lower privileges, such as subscribers, to escalate their access to administrator levels, compromising the security of the entire site. Upon performing a restore or migration, the absence of proper verification grants unauthorized privileges, posing a significant risk to site owners.

Affected Version(s)

JetBackup 3.1.7.9 < 3.1.23.5

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-2026-19453 - Proof of Concept

References

https://wpscan.com/vulnerability/82792fbb-36b3-4a90-a7a3-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jakub Herman
WPScan
.