User Impersonation Affecting passport-wsfed-saml2 package, versions >=3.0.5 <4.6.4
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-JS-PASSPORTWSFEDSAML2-10074173
- published8 May 2025
- disclosed6 May 2025
- creditkevinroh-okta
Introduced: 6 May 2025
NewCVE-2025-46573 (opens in a new tab)How to fix?
Upgrade passport-wsfed-saml2 to version 4.6.4 or higher.
Overview
passport-wsfed-saml2 is a SAML2 Protocol and WS-Fed library.
Affected versions of this package are vulnerable to User Impersonation via attribute smuggling in the SAML response. An attacker can impersonate any user during SAML authentication by tampering with a valid SAML response and adding attributes to it.
Note:
This is only exploitable if the following conditions are met:
Your service provider uses
passport-wsfed-saml2;A valid SAML Response, signed by the Identity Provider, can be obtained.