What is CVE-2026-114131?

CVE-2026-114131 is a medium-severity vulnerability in Nuxt, classified under CWE-436. CVSS score: 6.5/10. Published 2026-10-21.

How severe is CVE-2026-114131?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Nuxt

CVE-2026-114131

Nuxt is an open-source web development framework for Vue.js. From 3.11.0 until 3.21.4 and 4.4.4, Nuxt compares route-rule keys with the raw request path while route resolution decodes dynamic and catch-all parameters, allowing a percent-encoded segment to resolve to a protected page without matching the routeRules entry intended for that path. As a result, appMiddleware can be skipped during server rendering and an unauthenticated requester can receive the gated page and its SSR data. The same mismatch affects app-manifest rules including redirect, appLayout, ssr, prerender, and payload flags derived from cache, isr, and swr. This vulnerability is fixed in 4.4.4 and 3.21.4.

Published 2026-10-21.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Nuxt — versions >= 3.11.0, < 3.21.4, >= 4.0.0, < 4.4.4

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-114131?: CVE-2026-114131 is a medium-severity vulnerability in Nuxt, classified under CWE-436. CVSS score: 6.5/10. Published 2026-10-21.
How severe is CVE-2026-114131?: Medium severity. CVSS v3 base score is 6.5 out of 10.