CVE-2026-49993
CVE-2026-49993 · @nuxt/webpack-builder and @nuxt/rspack-builder dev server same-origin check bypassed when Sec-Fetch-Site, Origin, and Referer are all absent (incomplete fix for GHSA-6m52-m754-pw2g)
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Nuxt is an open-source web development framework for Vue.js. In @nuxt/rspack-builder and @nuxt/webpack-builder from versions 3.15.4 to before 3.21.7 and 4.0.0 to before 4.4.7, there is an incomplete fix for GHSA-6m52-m754-pw2g. Source code may still be stolen during dev when using the webpack / rspack builder if the dev server is bound to a non-loopback address (e.g. nuxt dev --host) and the developer opens a malicious site on the same network. This issue has been patched in versions 3.21.7 and 4.4.7.
CVSS 5.9 · Medium · EPSS 0.3% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
nuxt
- Versions
- >= 3.15.4, < 3.21.7: Affected
- >= 4.0.0, < 4.4.7: Affected
No fix published
@nuxt/webpack-builder npm
- Affected ranges
- SEMVER: ≥ 4.0.0, < 4.4.7
Update to 4.4.7
@nuxt/webpack-builder npm
- Affected ranges
- SEMVER: ≥ 3.15.4, < 3.21.7
Update to 3.21.7
@nuxt/rspack-builder npm
- Affected ranges
- SEMVER: ≥ 4.0.0, < 4.4.7
Update to 4.4.7
@nuxt/rspack-builder npm
- Affected ranges
- SEMVER: ≥ 3.15.4, < 3.21.7
Update to 3.21.7
Original sources
- https://github.com/nuxt/nuxt/security/advisories/GHSA-x6qj-4h56-5rj5
- https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2g
- https://github.com/nuxt/nuxt/pull/35200
- https://github.com/nuxt/nuxt/commit/77187ee4015e9267fb464951542a3e09e8b5fa05
- https://github.com/nuxt/nuxt/commit/e351de943e82db16970618b60dc7fdbaa58630f3
- https://nvd.nist.gov/vuln/detail/CVE-2026-49993