AmauriC tarteaucitron.js up to 1.21.x special element

Summaryinfo

A vulnerability classified as problematic was found in AmauriC tarteaucitron.js up to 1.21.x. The affected element is an unknown function. Such manipulation leads to special element. This vulnerability is traded as CVE-2025-48939. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in AmauriC tarteaucitron.js up to 1.21.x. Affected by this issue is an unknown function. The manipulation with an unknown input leads to a special element vulnerability. Using CWE to declare the problem leads to CWE-138. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as control elements or syntactic markers when they are sent to a downstream component. Impacted is integrity, and availability. CVE summarizes:

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 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 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.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-48939 since 05/28/2025. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are needed for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading to version 1.22.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-19885). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• JavaScript Library

Vendor

• AmauriC

Name

• tarteaucitron.js

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21

Website

• Product: https://github.com/AmauriC/tarteaucitron.js/

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Once again VulDB remains the best source for vulnerability data.

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