CVE-2026-45670
What it is
Nuxt is an open-source web development framework for Vue.js. In @nuxt/rspack-builder and @nuxt/webpack-builder versions 3.15.4 to before 3.21.6, and 4.0.0-alpha.1 to before 4.4.6, there is an incomplete fix for GHSA-4gf7-ff8x-hq99. Source code may 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 3.21.6 and 4.4.6.
At a glance
- Exploitability
- Can be exploited from the same network segment without logging in, but needs a user to act. High risk of data exposure.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 5.9 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Weakness
- CWE-749
- Record status
- Analyzed
Affected
- Nuxt nuxt\/rspack-builder < 3.21.5
- Nuxt nuxt\/rspack-builder < 4.4.5
- Nuxt nuxt\/webpack-builder < 3.21.5
- Nuxt nuxt\/webpack-builder < 4.4.5
Attack profile CVSS 4.0 · 5.9
- Attack vector
- Adjacent network
- Complexity
- High
- Attack requirements
- Present
- Privileges needed
- None
- User interaction
- Passive
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Raw vector
CVSS: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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-45670.md and follow it. Check whether this project is affected by CVE-2026-45670. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/nuxt/nuxt/pull/35051
- https://github.com/nuxt/nuxt/security/advisories/GHSA-4gf7-ff8x-hq99
- https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2g
- https://github.com/nuxt/nuxt/security/advisories/GHSA-4gf7-ff8x-hq99
- https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2g
References
- https://github.com/nuxt/nuxt/pull/35051
- https://github.com/nuxt/nuxt/security/advisories/GHSA-4gf7-ff8x-hq99
- https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2g
- https://github.com/nuxt/nuxt/security/advisories/GHSA-4gf7-ff8x-hq99
- https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2g