Vulnerability in Nuxt
CVE-2026-49993
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (21.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.3% 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: 0.003 · change: +0.000
Affected products
- Nuxt — versions >= 3.15.4, < 3.21.7, >= 4.0.0, < 4.4.7
- Nuxt Nuxt\/rspack-Builder
- Nuxt Nuxt\/webpack-Builder
Weakness classification (CWE)
References
- github.com/nuxt/nuxt/commit/77187ee4015e9267fb464951542a3e09e8b5fa05 (Patch)
- github.com/nuxt/nuxt/commit/e351de943e82db16970618b60dc7fdbaa58630f3 (Patch)
- github.com/nuxt/nuxt/pull/35200 (Issue Tracking)
- github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2g (Exploit, Patch, Mitigation, Vendor Advisory)
- github.com/nuxt/nuxt/security/advisories/GHSA-x6qj-4h56-5rj5 (Exploit, Patch, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-49993?
- CVE-2026-49993 is a medium-severity vulnerability in Nuxt, classified under CWE-749. CVSS score: 5.7/10. Published 2026-06-12.
- How severe is CVE-2026-49993?
- Medium severity. CVSS v3 base score is 5.7 out of 10.