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CVE-2026-9109— GPTranslate <= 2.31 - Unauthenticated Stored Cross-Site Scripting via REST API Translation Storage

Quick assessment

Affected
john-dagelmore GPTranslate – Multilingual AI Translation for WordPress: Automatically Translate Websites
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

john-dagelmore WordPress GPTranslate – Multilingual AI Translation for WordPress是john-dagelmore个人开发者的一个翻译插件。 john-dagelmore WordPress GPTranslate – Multilingual AI Translation for WordPress 2.31及之前版本存在安全漏洞，该漏洞源于REST API翻译存储过程中输入清理和输出转义不足，且API密钥可从HTML源码中获取

CVSS 7.2 · High EPSS 0.51% · P42

Affected Version Matrix 1

VendorProduct Version RangeStatus
john-dagelmore GPTranslate – Multilingual AI Translation for WordPress: Automatically Translate Websites ≤ 2.31 affected
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I. Basic Information for CVE-2026-9109

Vulnerability Information
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Vulnerability Title
GPTranslate <= 2.31 - Unauthenticated Stored Cross-Site Scripting via REST API Translation Storage
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
john-dagelmore WordPress GPTranslate – Multilingual AI Translation for WordPress 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
john-dagelmore WordPress GPTranslate – Multilingual AI Translation for WordPress是john-dagelmore个人开发者的一个翻译插件。 john-dagelmore WordPress GPTranslate – Multilingual AI Translation for WordPress 2.31及之前版本存在安全漏洞，该漏洞源于REST API翻译存储过程中输入清理和输出转义不足，且API密钥可从HTML源码中获取
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
john-dagelmore GPTranslate – Multilingual AI Translation for WordPress: Automatically Translate Websites 0 ~ 2.31 -

II. Public POCs for CVE-2026-9109

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III. Intelligence Information for CVE-2026-9109

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Patches & Fixes for CVE-2026-9109 (1)

Vendor Advisories for CVE-2026-9109 (1)

Vendor Pages for CVE-2026-9109 (1)

IV. Related Vulnerabilities

Same product: GPTranslate – Multilingual AI Translation for WordPress: Automatically Translate Websites
Same vendor: john-dagelmore
Same weakness: CWE-79

V. Comments for CVE-2026-9109

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