CVE-2025-59414Network attack vector

Browser request redirection via unvalidated Island keys

Published Sep 17, 2025 · Updated Sep 17, 2025

Client-side path traversal in affected Nuxt 3.x and 4.x releases allows remote attackers to redirect same-origin browser requests. The Island payload reviver accepts an unvalidated __nuxt_island.key from prerendered API data and interpolates it into an Island JSON path, so traversal segments select a different application endpoint. Exploitation requires prerendering of attacker-controlled API data and a user's later client-side navigation; requests stay in the browser and do not directly disclose data.

CVSS severity3.1
Low
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Client-side path traversal in affected Nuxt 3.x and 4.x releases allows remote attackers to redirect same-origin browser requests. The Island payload reviver accepts an unvalidated __nuxt_island.key from prerendered API data and interpolates it into an Island JSON path, so traversal segments select a different application endpoint. Exploitation requires prerendering of attacker-controlled API data and a user's later client-side navigation; requests stay in the browser and do not directly disclose data.

The record

CVE
CVE-2025-59414
Published
Sep 17, 2025
Updated
Sep 17, 2025
Vendor
Nuxt
Product
Nuxt
Classifications
CWE-22
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2025Record 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.

  1. Affected versionversion=>= 3.6.0 < 3.19.0
  2. Affected versionversion=>= 4.0.0 < 4.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Nuxt · Nuxtversion=>= 3.6.0 < 3.19.0; version=>= 4.0.0 < 4.1.0

Published CVSS scores

3.1NISTCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
3.1GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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