Nuxt up to 3.21.9/4.5.0 allocation of resources

Summaryinfo

A vulnerability has been found in Nuxt up to 3.21.9/4.5.0 and classified as problematic. This impacts an unknown function. The manipulation leads to allocation of resources. This vulnerability is uniquely identified as CVE-2026-71314. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Nuxt up to 3.21.9/4.5.0. This issue affects an unknown part. The manipulation with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. Impacted is availability. The summary by CVE is:

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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-71314 since 08/05/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 3.21.10 or 4.5.1 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• Nuxt

Version

• 3.21.0
• 3.21.1
• 3.21.2
• 3.21.3
• 3.21.4
• 3.21.5
• 3.21.6
• 3.21.7
• 3.21.8
• 3.21.9
• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5.0

Website

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

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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