CVE-2026-16650
Charitable < 1.8.12 - Unauthenticated Donation Payment-Status Manipulation via Square Webhook Signature Bypass
Description
The Charitable WordPress plugin before 1.8.12 does not verify the authenticity of incoming Square payment webhook events in a default configuration, allowing unauthenticated attackers to forge webhook notifications that mark donations as paid without any real payment.
INFO
Published Date :
Aug. 21, 2026, 12:16 p.m.
Last Modified :
Oct. 16, 2026, 3:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update the Charitable WordPress plugin immediately.
- Verify plugin settings for webhook authentication.
- Monitor donation records for suspicious activity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-16650.
| URL | Resource |
|---|---|
| https://wpscan.com/vulnerability/da611bd1-0702-4cdd-b04c-ad7210f78cfe/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-16650 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-16650
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-16650 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-16650 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 16, 2026
Action Type Old Value New Value Changed Translation Title: Charitable, Description: El plugin de WordPress Charitable anterior a 1.8.12 no verifica la autenticidad de los eventos de webhook de pago de Square entrantes en una configuración predeterminada, lo que permite a atacantes no autenticados falsificar notificaciones de webhook que marcan las donaciones como pagadas sin ningún pago real. Title: Charitable, Description: El plugin de WordPress Charitable anterior a 1.8.12 no verifica la autenticidad de los eventos de webhook de pago de Square entrantes en una configuración predeterminada, lo que permite a atacantes no autenticados falsificar notificaciones de webhook que marcan las donaciones como pagadas sin ningún pago real. -
CVE Translated by [email protected]
Oct. 16, 2026
Action Type Old Value New Value Added Translation Title: Charitable, Description: El plugin de WordPress Charitable anterior a 1.8.12 no verifica la autenticidad de los eventos de webhook de pago de Square entrantes en una configuración predeterminada, lo que permite a atacantes no autenticados falsificar notificaciones de webhook que marcan las donaciones como pagadas sin ningún pago real. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 21, 2026
Action Type Old Value New Value Added CWE CWE-345 Added SSVC {'id': 'CVE-2026-16650', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-21T12:47:40.773628Z'} -
New CVE Received by [email protected]
Aug. 21, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Unknown', 'product': 'Charitable', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.8.12', 'versionType': 'semver'}], 'collectionURL': 'https://wordpress.org/plugins', 'defaultStatus': 'unaffected'}] Added Description The Charitable WordPress plugin before 1.8.12 does not verify the authenticity of incoming Square payment webhook events in a default configuration, allowing unauthenticated attackers to forge webhook notifications that mark donations as paid without any real payment. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Added Reference https://wpscan.com/vulnerability/da611bd1-0702-4cdd-b04c-ad7210f78cfe/