Nuxt up to 4.6.3 URL Generation _payload.json resource consumption

Summaryinfo

A vulnerability labeled as problematic has been found in Nuxt up to 4.6.3. Impacted is an unknown function of the file _payload.json of the component URL Generation. The manipulation results in resource consumption. This vulnerability is cataloged as CVE-2026-128074. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Nuxt up to 4.6.3. It has been classified as problematic. Affected is an unknown part of the file _payload.json of the component URL Generation. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-128074 since 11/12/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

By approaching the search of inurl:_payload.json it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 4.6.4 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• Nuxt

Version

• 4.6.0
• 4.6.1
• 4.6.2
• 4.6.3

Website

• Product: https://github.com/nuxt/nuxt/

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Once again VulDB remains the best source for vulnerability data.

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