XSS in Amauri Tarteaucitronjs
CVE-2025-31476
tarteaucitron.js is a compliant and accessible cookie banner. A vulnerability was identified in tarteaucitron.js, allowing a user with high privileges (access to the site's source code or a CMS plugin) to enter a URL containing an insecure scheme such as javascript:alert(). Before the fix, URL validation was insufficient, which could allow arbitrary JavaScript execution if a user clicked on a malicious link. An attacker with high privileges could insert a link exploiting an insecure URL scheme, leading to execution of arbitrary JavaScript code, theft of sensitive data through phishing attacks, or modification of the user interface behavior. This vulnerability is fixed in 1.20.1.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (26.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000
Affected products
- Amauri Tarteaucitronjs
- Amauric Tarteaucitron.js — versions < 1.20.1
- Tacjs Project
Weakness classification (CWE)
References
- github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-p5g4-v748-6fh8 (Third Party Advisory)
- github.com/AmauriC/tarteaucitron.js/commit/2fa1e01023bce2e4b813200600bb1619d56c… (Patch)
- af854a3a-2127-422b-91ae-364da2661108 (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-31476?
- CVE-2025-31476 is a medium-severity vulnerability in Amauri Tarteaucitronjs, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2025-04-07.
- How severe is CVE-2025-31476?
- Medium severity. CVSS v3 base score is 4.8 out of 10.