Vulnerability Description
The GPTranslate – Multilingual AI Translation for WordPress: Automatically Translate Websites plugin for WordPress is vulnerable to Stored Cross-Site Scripting via REST API Translation Storage in all versions up to, and including, 2.31 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The deterministically derived API key (sha256 of the site URL) is printed in the HTML source of every page via the JavaScript variable gptApiKey, meaning any unauthenticated visitor can retrieve the key and submit malicious translation payloads to the /wp-json/gptranslate/v1/request endpoint without any additional precondition.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/gptranslate/tags/2.27.5/assets/js/adm
- https://plugins.trac.wordpress.org/browser/gptranslate/tags/2.27.5/gptranslate.p
- https://plugins.trac.wordpress.org/browser/gptranslate/tags/2.27.5/gptranslate.p
- https://plugins.trac.wordpress.org/browser/gptranslate/tags/2.27.5/gptranslate.p
- https://plugins.trac.wordpress.org/browser/gptranslate/tags/2.31/assets/js/admin
- https://plugins.trac.wordpress.org/browser/gptranslate/tags/2.31/gptranslate.php
- https://plugins.trac.wordpress.org/browser/gptranslate/tags/2.31/gptranslate.php
- https://plugins.trac.wordpress.org/browser/gptranslate/tags/2.31/gptranslate.php
- https://plugins.trac.wordpress.org/browser/gptranslate/tags/2.32/assets/js/admin
- https://plugins.trac.wordpress.org/browser/gptranslate/tags/2.32/gptranslate.php
- https://plugins.trac.wordpress.org/browser/gptranslate/tags/2.32/gptranslate.php
- https://www.wordfence.com/threat-intel/vulnerabilities/id/1c93b564-5428-4b0e-bbe
FAQ
What is CVE-2026-9109?
CVE-2026-9109 is a vulnerability with a CVSS score of 7.2 (HIGH). The GPTranslate – Multilingual AI Translation for WordPress: Automatically Translate Websites plugin for WordPress is vulnerable to Stored Cross-Site Scripting via REST API Translation Storage in all ...
How severe is CVE-2026-9109?
CVE-2026-9109 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-9109?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.