CVE-2026-56698: Nuxt - Cross-Site Scripting via navigateTo open Option

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% 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-79

Description

Nuxt versions 4.0.0 before 4.4.7 and 3.x before 3.21.7 fail to validate script-capable URLs in the navigateTo open option, allowing client-side script execution. Attackers can supply javascript: URLs through the open parameter to execute arbitrary scripts in the application's origin when user-controlled input is passed to navigateTo.

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/3394716d4a913cba904b028df5338f2aead50032
https://github.com/nuxt/nuxt/commit/62fc32eddf648b00a3890141e0235d2a222b024d
https://github.com/nuxt/nuxt/security/advisories/GHSA-c9cv-mq2m-ppp3
https://www.vulncheck.com/advisories/nuxt-cross-site-scripting-via-navigateto-open-option

Get alerted when CVE-2026-56698 or the next vulnerability affects your stack