Authentication Bypass in CryptoCloud WordPress Plugin
CVE-2026-103327

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Cryptocloud
Vendor
CVE Published:
3 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-103327?

The CryptoCloud WordPress plugin versions 3.0.0 to 3.0.1 contains a significant security flaw that stems from the absence of authentication checks for payment notifications received from its gateway callback. This vulnerability arises because the integrity verification process is not implemented, and the webhook secret is left as an empty default. As a result, unauthorized actors can exploit this weakness to manipulate the status of orders, marking them as paid or failed without completing any actual payment transaction.

Affected Version(s)

CryptoCloud 3.0.0 <= 3.0.1

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.

CVE-2026-103327 - Proof of Concept

References

https://wpscan.com/vulnerability/fd5563ed-85c6-4b17-acf6-...
exploitvdb-entrytechnical-description

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

Naoki Kawahigashi
WPScan
.