CVE-2026-128074
Nuxt payload URL generation has quadratic cost for repeated slashes in the request path
Nuxt is an open-source web development framework for Vue.js. From 4.6.0 until 4.6.4, _payload.json URL generation and the experimental early-404 path use a trailing-slash regular expression whose work grows quadratically with a long run of slash characters. An unauthenticated request can synchronously occupy the Node.js event loop and delay other requests when server-side rendering uses isr, swr, or cache route rules, or when experimental.early404 is enabled. Applications without those route rules and without experimental.early404, fully prerendered applications, and client-only applications are unaffected; the impact is limited to availability. This issue is fixed in version 4.6.4.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| nuxt nuxt |
>= 4.6.0, < 4.6.4 (affected) | CNA: GitHub_M |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 6.9 medium |
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N | CNA: GitHub_M |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/nuxt/nuxt/security/advisories/GHSA-r9jc-w898-3fv6CNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/nuxt/nuxt/commit/97424dd21c59b60cc7ece28576e15069ca0fdbc4CNA: GitHub_M · x_refsource_MISC
- https://github.com/nuxt/nuxt/releases/tag/v4.6.4CNA: GitHub_M · x_refsource_MISC
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