CVE-2026-49993
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.
Does this matter?
Lower severity and a low EPSS score (0.28%). Track it; it rarely justifies an emergency change on its own.
Description
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 4.0
- 5.9 MEDIUMCVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.28% probability · 20th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-749
- Affected
- nuxt/nuxt\/rspack-builder · nuxt/nuxt\/webpack-builder
- Source
- security-advisories@github.com
References
- https://github.com/nuxt/nuxt/commit/77187ee4015e9267fb464951542a3e09e8b5fa05Patch
- https://github.com/nuxt/nuxt/commit/e351de943e82db16970618b60dc7fdbaa58630f3Patch
- https://github.com/nuxt/nuxt/pull/35200Issue Tracking
- https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2gExploit, Mitigation, Patch, Vendor Advisory
- https://github.com/nuxt/nuxt/security/advisories/GHSA-x6qj-4h56-5rj5Exploit, Mitigation, Patch, Vendor Advisory
- https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2gExploit, Mitigation, Patch, Vendor Advisory
- https://github.com/nuxt/nuxt/security/advisories/GHSA-x6qj-4h56-5rj5Exploit, Mitigation, Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.