Nuxt up to 3.21.6/4.4.6 Query Parameter cross site scripting

Summaryinfo

A vulnerability was found in Nuxt up to 3.21.6/4.4.6. It has been classified as problematic. Affected by this issue is some unknown functionality of the component Query Parameter Handler. The manipulation leads to cross site scripting. This vulnerability is listed as CVE-2026-53722. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Nuxt up to 3.21.6/4.4.6. This issue affects an unknown code block of the component Query Parameter Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

Nuxt is an open-source web development framework for Vue.js. Prior to versions 3.21.7 and 4.4.7, did not validate the URL scheme of values bound to its to or href props before rendering them into the href attribute of the underlying element. When an application binds attacker-controlled input (a query parameter, a CMS field, a user-supplied profile URL) to or :href, the attacker can supply a javascript: or vbscript: URL that is reflected verbatim into the rendered markup. Clicking the link executes the supplied script in the origin of the Nuxt application, resulting in reflected DOM-based cross-site scripting. A data:text/html,... payload reflected through the same sink does not execute in the application's origin but enables a same-tab phishing surface anchored to a legitimate application link. The same value was exposed to consumers of the component's custom slot via the href and route.href props, so applications that re-bind those values to their own anchors were affected identically. This issue has been patched in versions 3.21.7 and 4.4.7.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-53722 since 06/10/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 3.21.7 or 4.4.7 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• Nuxt

Version

• 3.21.0
• 3.21.1
• 3.21.2
• 3.21.3
• 3.21.4
• 3.21.5
• 3.21.6
• 4.4.0
• 4.4.1
• 4.4.2
• 4.4.3
• 4.4.4
• 4.4.5
• 4.4.6

Website

• Product: https://github.com/nuxt/nuxt/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion