CVE-2026-71318

MEDIUM

Nuxt: Unauthorized Component Instantiation via Server Island Props

Title source: cna
STIX 2.1

Description

Nuxt is an open-source web development framework for Vue.js. From 3.1.0 until 3.21.10 and 4.5.1, an attacker can supply a top-level `as` prop to the /__nuxt_island/ endpoint and drive dynamic component resolution through <component :is>, resolveDynamicComponent, or h(). This issue is fixed in 3.21.10 and 4.5.1.

References (3)

Core 3
Core References
X_Refsource_Misc x_refsource_misc
https://github.com/nuxt/nuxt/releases/tag/v3.21.10
X_Refsource_Misc x_refsource_misc
https://github.com/nuxt/nuxt/releases/tag/v4.5.1

Scores

CVSS v3 4.8
EPSS 0.0021
EPSS Percentile 11.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-20
Status published
Products (4)
npm/nuxt 3.1.0 - 3.21.10npm
npm/nuxt 4.0.0 - 4.5.1npm
nuxt/nuxt >= 3.1.0, < 3.21.10
nuxt/nuxt >= 4.0.0, < 4.5.1
Published Aug 05, 2026
Tracked Since Aug 06, 2026