CVE-2026-56317 PUBLISHED

Nuxt - Cross-Site Scripting via NoScript Component Slot Content

Assigner: VulnCheck
Reserved: 20.06.2026 Published: 20.06.2026 Updated: 20.06.2026

Nuxt before 4.4.7 (and the 3.x branch before 3.21.7) contains a cross-site scripting vulnerability in the NoScript component that writes slot content to innerHTML without escaping. Attackers can inject malicious scripts through untrusted data in NoScript slots, such as route.query parameters, which execute in the document context when the noscript tag is implicitly closed by script tags.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS Score: 2.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	Present	Availability	None	Availability	None
Privileges Required	None
User Interaction	Passive

CVSS 4.0

Product Status

Vendor	Nuxt
Product	Nuxt
Versions	Default: unaffected affected from 4.0.0 to 4.4.7 (excl.) Version 4.4.7 is unaffected

Vendor	Nuxt
Product	Nuxt
Versions	Default: unaffected affected from 0 to 3.21.7 (excl.) Version 3.21.7 is unaffected

Credits

alcls01111 reporter

References

Problem Types

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE