What’s Vulnerable › Vulnerabilities

CVE-2025-48939: tarteaucitron.js vulnerable to DOM Clobbering via document.currentScript

• Severity: medium (CVSS 4.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-07-03 · updated 2026-06-17
• Weakness: CWE-138

Description

tarteaucitron.js is a compliant and accessible cookie banner. Prior to version 1.22.0, a vulnerability was identified in tarteaucitron.js where document.currentScript was accessed without verifying that it referenced an actual <script> element. If an attacker injected an HTML element, it could clobber the document.currentScript property. This causes the script to resolve incorrectly to an element instead of the <script> tag, leading to unexpected behavior or failure to load the script path correctly. This issue arises because in some browser environments, named DOM elements become properties on the global document object. An attacker with control over the HTML could exploit this to change the CDN domain of tarteaucitron. This issue has been patched in version 1.22.0.

Affected products

• Amauri Tarteaucitronjs: before 1.22.0 — fixed in 1.22.0

How to fix

Upgrade to a fixed version: Amauri Tarteaucitronjs 1.22.0. Check the vendor advisory for mitigations.

References

• https://github.com/AmauriC/tarteaucitron.js/commit/230a3b69d363837acfa895823d841e0608826ba3
• https://github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-q43x-79jr-cq98

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