Unauthenticated Privilege Escalation in MStore API by WordPress
CVE-2026-27543

8.1HIGH

Key Information:

Vendor

WordPress
Status
Mstore Api
Vendor
CVE Published:
13 August 2026

What is CVE-2026-27543?

A vulnerability exists in MStore API prior to version 4.20.0 that allows unauthenticated users to escalate their privileges. This weakness could be exploited to gain unauthorized access and control over sensitive functionalities of the application, posing significant security risks.

Affected Version(s)

MStore API <= 4.20.0

References

https://patchstack.com/database/wordpress/plugin/mstore-a...
vdb-entry

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Taylsec | Patchstack Bug Bounty Program
.