High severity · published Aug 5, 2026
CVE-2026-71314
Nuxt: Unauthenticated out-of-memory crash via unbounded v-for expansion in island rendering
7.5
CVSS
0.9%
EPSS
No
On KEV
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 unauthenticated attacker can use a server island v-for prop, including vforToArray and , to trigger unbounded SSR memory allocation until MAX_VFOR_LENGTH = 100000 and crash the Nuxt process. This issue is fixed in 3.21.10 and 4.5.1.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NU
nuxt · nuxt
>= 4.0.0, < 4.5.1; >= 3.1.0, < 3.21.10 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-71314
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-71314
github.com
https://github.com/nuxt/nuxt/commit/4e35ae9babd94be53246e31200232d48438bb34e
github.com
https://github.com/nuxt/nuxt/commit/668cdfdfda41849ed11c1ee5e2067a11fc103b22
github.com
https://github.com/nuxt/nuxt/releases/tag/v3.21.10
github.com
https://github.com/nuxt/nuxt/releases/tag/v4.5.1
github.com
https://github.com/nuxt/nuxt/security/advisories/GHSA-hxcr-hm88-mpq6
More from nuxt
9.8
CVE-2023-3224
Code Injection in GitHub repository nuxt/nuxt prior to 3.5.3
8.8
CVE-2024-34344
Nuxt is a free and open-source framework to create full-stack web applications and websites with Vue.js
8.8
CVE-2024-23657
Nuxt is a free and open-source framework to create full-stack web applications and websites with Vue.js
8.2
CVE-2026-71315
Nuxt route rules silently dropped for mixed-case paths, bypassing appMiddleware auth gates (incomplete fix for CVE-2026-53721)
8.2
CVE-2026-53721
Nuxt: Route-rule middleware bypass via case-sensitivity mismatch between vue-router and the routeRules matcher