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Vulnerabilities

Security fix · CVE-2026-71314

Unauthenticated out-of-memory crash via unbounded v-for expansion in Nuxt island rendering

Published Jul 27, 2026 · catalog updated Oct 16, 2026 · Unauthenticated out-of-memory crash via

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-71314. EPSS is 0.91%. Act only if a listed version of Unauthenticated out-of-memory crash via is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Unauthenticated out-of-memory crash via).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.91%
Remediation
Version ranges on file
Affected products
npm nuxt

### Impact An unauthenticated attacker can crash a Nuxt server that renders an island / server component containing a over a prop (for example or a ). Island props come from the request, and the hash in the island URL is a non-secret digest that protects caches rather than authorising the request, so an attacker can compute a valid hash for any props and send the iterated prop as a large integer. Vue expands a over a number to that many nodes during SSR, so memory use grows with the attacker's number rather than with the size of the request. Reporter figures: produced a 142.9 MB response; (and on a slot list) produced an out-of-memory crash of the worker from a single ~130-byte request. Both the plain path (Vue's ) and the slot path ( ) are affected. ### Patches Fixed in and . Numeric sources in island and server component templates are clamped to (10,000) iterations, covering the plain path, the element, and the slot-props helper. Together with the island request body-size cap (GHSA-9pgf-384g-p7mv), this removes the amplification from a small integer prop to an arbitrarily large render. The clamp is defence in depth. It does not bound all the work an island render can do. Island props are untrusted request input, as described in the [server components guide](https://nuxt.com/docs/4.x/guide/concepts/server-components), and components that do work in proportion to a prop (nested loops, loops over prop arrays, or passing the prop to a child component that loops over it) must validate or clamp that prop themselves. Reports showing that such work remains possible are not treated as new vulnerabilities; see the [security policy](https://github.com/nuxt/nuxt/security/policy). ### Workarounds Validate or clamp props before iterating over them in server components (for example , or a schema check on the prop). A body-size limit in front of only mitigates array-shaped inputs, not the integer-amplification case. ### References - Bound helper: - [Server components guide](https

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • npm nuxt>= 3.1.0, < 3.21.10
  • npm nuxt>= 4.0.0, < 4.5.1

How to fix CVE-2026-71314

  • Upgrade

    CVE-2026-71314 lists a fix boundary at 3.21.10. Compare the installed build with that boundary before you change production.

  • Version check

    Affected < 3.21.10

  • Advisory

    Open the inventory_github record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-71314. EPSS is 0.91%. Act only if a listed version of Unauthenticated out-of-memory crash via is installed.

Which versions are affected?

Compare what you have installed with >= 3.1.0, < 3.21.10, >= 4.0.0, < 4.5.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-1284; CWE-400: Uncontrolled Resource Consumption; CWE-770: Allocation of Resources Without Limits or Throttling. EPSS 0.91%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Nuxt security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 27, 2026 · Maintainer security tabs

    Detected

    ### Impact An unauthenticated attacker can crash a Nuxt server that renders an island / server component containing a over a prop (for example or a ). Island props come from the request, and the hash in the island URL is a non-secret digest that protects caches rather than authorising the request, so an attacker can compute a valid hash for any props and send the iterated prop as a large integer.

  2. Oct 16, 2026 · Maintainer security tabs

    Updated

    ### Impact An unauthenticated attacker can crash a Nuxt server that renders an island / server component containing a over a prop (for example or a ). Island props come from the request, and the hash in the island URL is a non-secret digest that protects caches rather than authorising the request, so an attacker can compute a valid hash for any props and send the iterated prop as a large integer.

Sources

  • Maintainer security tabsVendor advisoryGHSA-hxcr-hm88-mpq6

    ### Impact An unauthenticated attacker can crash a Nuxt server that renders an island / server component containing a over a prop (for example or a ). Island props come from the request, and the hash in the island URL is a non-secret digest that protects caches rather than authorising the request, so an attacker can compute a valid hash for any props and send the iterated prop as a large integer.

    github.com

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Maintainer security tabsNov 2, 2026