High

Improper Neutralization of Script in Attributes in @dcl/single-sign-on-client

Disclosed: 04.09.2023
Updated: 11.10.2026 10:22

Impact

Improper input validation in the init function allows arbitrary javascript to be executed using the javascript: prefix

    SSO.init('javascript:alert("javascript successfully injected")')

Patches

This vulnerability was patched on version 0.1.0

Workarounds

This vulnerability can be prevented if user input correctly sanitized or there is no user input pass to the init function

Affected software

Click a technology to see all vulnerabilities affecting it.

Platform	Package	Vulnerable versions	Fixed in
npm package	@dcl/single-sign-on-client	< 0.1.0	0.1.0

References

CVSS score 7.5/10

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-79
Platform: npm
Package: @dcl/single-sign-on-client
Disclosed: 04.09.2023
Updated: 11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-vp4f-wxgw-7x8x - CC BY 4.0

Vulnerability history: @dcl/single-sign-on-client

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

This is the only known vulnerability of this package.

Know which vulnerabilities affect your application

With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.

Connect your application