CVE-2025-48939

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.

CVSS v3.1 Score

4.2

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:N/I:L/A:L

Weakness Type (CWE)

CWE-138 CWE-138

Affected Products

Vendor	Product	Versions
amauri	tarteaucitronjs	< 1.22.0

References

Advisories & Patches

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

Exploits

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

Frequently Asked Questions

What is CVE-2025-48939? +

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. It has a CVSS v3.1 base score of 4.2 (MEDIUM).

How severe is CVE-2025-48939? +

CVE-2025-48939 has a CVSS v3.1 score of 4.2 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-48939? +

CVE-2025-48939 affects products from amauri, specifically: tarteaucitronjs. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-48939? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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