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CVE-2025-31475— tarteaucitron.js allows prototype pollution via custom text injection

Quick assessment

Affected
AmauriC tarteaucitron.js
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.

tarteaucitron.js是Amauri CHAMPEAUX个人开发者的一个 cookie 管理器。 tarteaucitron.js 1.20.1之前版本存在安全漏洞，该漏洞源于addOrUpdate函数输入验证不足，可能导致原型污染。

CVSS 5.5 · Medium EPSS 0.34% · P26
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I. Basic Information for CVE-2025-31475

Vulnerability Information
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Vulnerability Title
tarteaucitron.js allows prototype pollution via custom text injection
Source: CVE Program / CVE List V5
Vulnerability Description
tarteaucitron.js is a compliant and accessible cookie banner. A vulnerability was identified in tarteaucitron.js prior to 1.20.1, where the addOrUpdate function, used for applying custom texts, did not properly validate input. This allowed an attacker with direct access to the site's source code or a CMS plugin to manipulate JavaScript object prototypes, leading to potential security risks such as data corruption or unintended code execution. An attacker with high privileges could exploit this vulnerability to modify object prototypes, affecting core JavaScript behavior, cause application crashes or unexpected behavior, or potentially introduce further security vulnerabilities depending on the application's architecture. This vulnerability is fixed in 1.20.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1321
Source: CVE Program / CVE List V5
Vulnerability Title
tarteaucitron.js 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
tarteaucitron.js是Amauri CHAMPEAUX个人开发者的一个 cookie 管理器。 tarteaucitron.js 1.20.1之前版本存在安全漏洞，该漏洞源于addOrUpdate函数输入验证不足，可能导致原型污染。
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
AmauriC tarteaucitron.js < 1.20.1 -

II. Public POCs for CVE-2025-31475

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III. Intelligence Information for CVE-2025-31475

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Vendor Advisories for CVE-2025-31475 (1)

Same Patch Batch · AmauriC · 2025-04-07 · 3 CVEs total

CVE-2025-31138 5.5 MEDIUM tarteaucitron.js allows UI manipulation via unrestricted CSS injection
CVE-2025-31476 4.8 MEDIUM tarteaucitron.js allows url scheme injection via unfiltered inputs

IV. Related Vulnerabilities

Same product: tarteaucitron.js
Same vendor: AmauriC
Same weakness: CWE-1321

V. Comments for CVE-2025-31475

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