GHSA-9pgf-384g-p7mv
Suggest an improvement- Source
- https://github.com/advisories/GHSA-9pgf-384g-p7mv
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-9pgf-384g-p7mv/GHSA-9pgf-384g-p7mv.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-9pgf-384g-p7mv
- Aliases
- Published
- 2026-08-05T21:43:03Z
- Modified
- 2026-08-05T21:50:34.856445357Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- Nuxt: Unauthenticated CPU exhaustion parsing and hashing the Nuxt island endpoint body before hash validation
- Details
-
Impact
The internal island renderer endpoint (
/__nuxt_island/...) decodes and hashes attacker-controlled request input before it validates the URL-resident hash. An unauthenticatedPOST /__nuxt_island/<name>_<anything>.jsonwith a large JSON body (for example ~4.6 MB / 150k keys) is fully read,destr-parsed, and run throughohashbefore the request is rejected with a 400. Because Nitro runs on a single event loop, this both wastes CPU on the doomed request and delays every concurrent request. A low request rate is enough to degrade or stall the server. No valid hash and no authentication are required.Patches
Fixed in
nuxt@4.5.1andnuxt@3.21.10. The island handler now enforces a raw body-size cap (413) and a JSON nesting-depth cap (400) before parsing or hashing, so oversized or deeply nested input is rejected cheaply.Workarounds
Put a small request-body limit in front of
/__nuxt_island/at your reverse proxy / edge (islands legitimately send only a compact props payload), or disable server components if unused. - Database specific
{ "cwe_ids": [ "CWE-407", "CWE-770" ], "github_reviewed_at": "2026-08-05T21:43:03Z", "nvd_published_at": null, "severity": "HIGH", "github_reviewed": true }- References
-
- https://github.com/nuxt/nuxt/security/advisories/GHSA-9pgf-384g-p7mv
- https://github.com/nuxt/nuxt/commit/4e35ae9babd94be53246e31200232d48438bb34e
- https://github.com/nuxt/nuxt/commit/668cdfdfda41849ed11c1ee5e2067a11fc103b22
- https://github.com/nuxt/nuxt
- https://github.com/nuxt/nuxt/releases/tag/v3.21.10
- https://github.com/nuxt/nuxt/releases/tag/v4.5.1
Affected packages
npm / nuxt
Package
- Name
- nuxt
- View open source insights on deps.dev
- Purl
- pkg:npm/nuxt
npm / nuxt
Package
- Name
- nuxt
- View open source insights on deps.dev
- Purl
- pkg:npm/nuxt