CVE-2025-31138: medium-severity vulnerability in AmauriC tarteaucitron.js
tarteaucitron.js allows UI manipulation via unrestricted CSS injection
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.5epss 0.3%
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.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
Affected products
AmauriC · tarteaucitron.jsRelated CVEs — AmauriC tarteaucitron.js
In the same product, most dangerous first.
CVE-2025-31476MEDIUMtarteaucitron.js allows url scheme injection via unfiltered inputsEPSS 0.4%CVE-2026-49977MEDIUMtarteaucitron.js: data-cookie attribute can be used to delete arbitrary cookiesEPSS 0.4%CVE-2025-31475MEDIUMtarteaucitron.js allows prototype pollution via custom text injectionEPSS 0.4%CVE-2026-111714LOWtarteaucitron.js before 1.37.0 ReDoS via Unescaped Cookie Name in cookie.purgeEPSS 0.2%CVE-2025-48939MEDIUMtarteaucitron.js vulnerable to DOM Clobbering via document.currentScriptEPSS 0.2%CVE-2026-111713MEDIUMtarteaucitron.js before 1.37.0 XSS via getElemAttr Attribute Validation MismatchEPSS 0.2%