Authentication Bypass in Payment Gateway for Telcell WordPress Plugin
CVE-2026-103301

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Payment Gateway For Telcell
Vendor
CVE Published:
21 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-103301?

The Payment Gateway for Telcell WordPress plugin prior to version 2.0.5 fails to verify the authenticity of incoming payment notifications due to an empty default secret used for signing. This flaw enables unauthenticated attackers to craft valid notifications, which may lead them to incorrectly mark selected WooCommerce orders as paid. Additionally, the plugin's payment handling mechanism allows attackers to flag orders as failed by providing invalid signatures, raising significant security concerns for WooCommerce users relying on this payment integration.

Affected Version(s)

Payment Gateway for Telcell 0 < 2.0.5

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-2026-103301 - Proof of Concept

References

https://wpscan.com/vulnerability/c3b5f5fb-cddf-47f3-b39f-...
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
.