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CVE-2021-30492

Date: August 19, 2025

Lack of input validation of the Zendesk subdomain could expose users of the library to Server Side Request Forgery (SSRF). The resolution is to validate the provided Zendesk subdomain to be a valid subdomain in: getAuthUrl getAccessToken Fixed in v2.2.11

Language: PHP

Severity Score

Related Resources (5)

https://github.com/zendesk/zendesk_api_client_php/commit/b451b743d9d6d81a9abf7cb86e70ec9c5332123e
https://github.com/zendesk/zendesk_api_client_php/pull/466
https://nvd.nist.gov/vuln/detail/CVE-2021-30492
https://github.com/zendesk/zendesk_api_client_php/security/advisories/GHSA-q348-f93x-9gx4
https://www.mend.io/vulnerability-database/CVE-2021-30492

Severity Score

Weakness Type (CWE)

Improper Input Validation

CWE-20

Server-Side Request Forgery (SSRF)

CWE-918

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

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