What’s Vulnerable › Vulnerabilities

CVE-2026-56697: Nuxt - Open Redirect via Protocol-Relative Paths in reloadNuxtApp

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-22 · updated 2026-06-25
• Weakness: CWE-601

Description

Nuxt versions 4.0.0 before 4.4.7 and 3.x before 3.21.7 accept protocol-relative paths such as //evil.com in the reloadNuxtApp function; these pass the script-protocol check but resolve to a cross-origin URL against the current page protocol. Attackers can inject paths like //evil.com to redirect users to attacker-controlled hosts, enabling phishing and OAuth authorization-code theft.

Affected products

• nuxt: from 3.0.0 before 3.21.7; from 4.0.0 before 4.4.7 — fixed in 3.21.7, 4.4.7

How to fix

Upgrade to a fixed version: nuxt 3.21.7, 4.4.7. Check the vendor advisory for mitigations.

References

• https://github.com/nuxt/nuxt/commit/6497d99dd106254abd089f6a263d7773869a343b
• https://github.com/nuxt/nuxt/commit/e447a793c47766834f7497f8412a76cd56fd8ee1
• https://github.com/nuxt/nuxt/security/advisories/GHSA-c9cv-mq2m-ppp3
• https://www.vulncheck.com/advisories/nuxt-open-redirect-via-protocol-relative-paths-in-reloadnuxtapp

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