What’s Vulnerable › Vulnerabilities

CVE-2026-71314: Nuxt: Unauthenticated out-of-memory crash via unbounded v-for expansion in island rendering

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-05 · updated 2026-09-08
• Weakness: CWE-400

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.

Affected products

• nuxt: from 4.0.0, < 4.5.1; from 3.1.0, < 3.21.10

References

• https://github.com/nuxt/nuxt/commit/4e35ae9babd94be53246e31200232d48438bb34e
• https://github.com/nuxt/nuxt/commit/668cdfdfda41849ed11c1ee5e2067a11fc103b22
• https://github.com/nuxt/nuxt/releases/tag/v3.21.10
• https://github.com/nuxt/nuxt/releases/tag/v4.5.1
• https://github.com/nuxt/nuxt/security/advisories/GHSA-hxcr-hm88-mpq6

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