Authentication Bypass in Charitable WordPress Plugin by WPChivalry
CVE-2026-16650

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Charitable
Vendor
CVE Published:
21 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-16650?

The Charitable WordPress plugin prior to version 1.8.12 contains a critical flaw that allows unauthenticated attackers to forge payment webhook notifications. This occurs due to the plugin's failure to verify the authenticity of incoming Square payment webhooks, enabling attackers to mark donations as paid without receiving actual payments. This vulnerability poses significant risks to financial transactions and the integrity of donation processing.

Affected Version(s)

Charitable 0 < 1.8.12

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-2026-16650 - Proof of Concept

References

https://wpscan.com/vulnerability/da611bd1-0702-4cdd-b04c-...
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

Muni Nitish Kumar Yaddala
WPScan
.