GitHub Advisoryadvisory · npm

GHSA-8gqj-226h-gm8r Passport-wsfed-saml2 allows SAML Authentication Bypass via Attribute Smuggling

HIGH Published 2025-05-06 Modified 2025-05-07 Official page ↗
Aliases
CVE-2025-46573
Ecosystem
npm
Packages
passport-wsfed-saml2
Severity
High
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Weaknesses
CWE-287, CWE-290
Reviewed
2025-05-06

Affected packages

• npm passport-wsfed-saml2: >= 3.0.5, < 4.6.4 → fixed in 4.6.4

Description

Overview This vulnerability allows an attacker to impersonate any user during SAML authentication by tampering with a valid SAML response. This can be done by adding attributes to the response. Am I Affected? You are affected by this SAML Attribute Smuggling vulnerability if you are using `passport-wsfed-saml2` version 4.6.3 or below, specifically under the following conditions: 1. The service provider is using `passport-wsfed-saml2`, 2. A valid SAML Response signed by the Identity Provider can be obtained Fix Upgrade to v4.6.4 or greater.

Related

Alias · CVE (1)

  • CVE-2025-46573 passport-wsfed-saml2 provides passport strategy for both WS-fed and SAML2 protocol. vulnerability

Weakness · CWE (2)

  • CWE-287 Improper Authentication weakness
  • CWE-290 Authentication Bypass by Spoofing weakness

References