Token Authentication Bypass in MStore API WordPress Plugin
CVE-2026-16030

8.1HIGH

Key Information:

Vendor

WordPress
Status
Mstore Api
Vendor
CVE Published:
7 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-16030?

The MStore API WordPress plugin prior to version 4.21.0 fails to properly validate the cryptographic signature of the token used for phone-based login. This flaw enables unauthorized attackers, who are aware of a registered user's phone number, to create a forged token, potentially allowing them to gain access to the user's account, including those with administrative privileges.

Affected Version(s)

MStore API 0 < 4.21.0

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-2026-16030 - Proof of Concept

References

https://wpscan.com/vulnerability/adf8ffe0-39a2-4d26-af11-...
exploitvdb-entrytechnical-description

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

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Sai Praneeth Koti
WPScan
.