Unauthenticated SSR worker crash via unbounded v-for expansion
Published Aug 5, 2026 · Updated Aug 5, 2026
Denial of service in Nuxt 3.1.0 through 3.21.9 and 4.0.0 through 4.5.0 allows remote attackers to crash SSR workers. The island endpoint accepts attacker-chosen props under a computable non-secret hash, and ssrRenderList or vforToArray expands a large integer without an iteration bound, allocating memory until exhaustion. Exploitation requires an application to render a server island or server component whose v-for iterates over a prop; a single small request can terminate its Nuxt worker.
Summary
What happened
Denial of service in Nuxt 3.1.0 through 3.21.9 and 4.0.0 through 4.5.0 allows remote attackers to crash SSR workers. The island endpoint accepts attacker-chosen props under a computable non-secret hash, and ssrRenderList or vforToArray expands a large integer without an iteration bound, allocating memory until exhaustion. Exploitation requires an application to render a server island or server component whose v-for iterates over a prop; a single small request can terminate its Nuxt worker.
The record
- CVE
- CVE-2026-71314
- Published
- Aug 5, 2026
- Updated
- Aug 5, 2026
- Vendor
- Nuxt
- Product
- Nuxt
- Classifications
- CWE-789, CWE-770, CWE-400, CWE-1284, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 5, 2026CVE publishedPublication date reported by the CVE source.
- Aug 5, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=>= 3.1.0, < 3.21.10
- Affected versionversion=>= 4.0.0, < 4.5.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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