Vulnerability in Amauri Tarteaucitronjs
CVE-2025-31138
tarteaucitron.js is a compliant and accessible cookie banner. A vulnerability was identified in tarteaucitron.js prior to 1.20.1, where user-controlled inputs for element dimensions (width and height) were not properly validated. This allowed an attacker with direct access to the site's source code or a CMS plugin to set values like 100%;height:100%;position:fixed;, potentially covering the entire viewport and facilitating clickjacking attacks. An attacker with high privileges could exploit this vulnerability to overlay malicious UI elements on top of legitimate content, trick users into interacting with hidden elements (clickjacking), or disrupt the intended functionality and accessibility of the website. This vulnerability is fixed in 1.20.1.
EPSS: 0.003 (16.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Amauri Tarteaucitronjs
- Amauric Tarteaucitron.js — versions < 1.20.1
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-31138?
- CVE-2025-31138 is a medium-severity vulnerability in Amauri Tarteaucitronjs, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 5.5/10. Published 2025-04-07.
- How severe is CVE-2025-31138?
- Medium severity. CVSS v3 base score is 5.5 out of 10.