Lack of Input Validation in zendesk_api_client_php for Zendesk Subdomain
Impact
Lack of input validation of the Zendesk subdomain could expose users of the library to Server Side Request Forgery (SSRF).
Resolution
Validate the provided Zendesk subdomain to be a valid subdomain in:
- getAuthUrl
- getAccessToken
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | zendesk/zendesk_api_client_php | < 2.2.11 | 2.2.11 |
References
- Weakness (CWE)
CWE-20, CWE-918- Platform
- Composer
- Package
zendesk/zendesk_api_client_php- Disclosed
- 29.04.2021
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-q348-f93x-9gx4 - CC BY 4.0
Vulnerability history: zendesk/zendesk_api_client_php
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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