CVE-2025-46573
EPSS 0.24%Passport-wsfed-saml2 allows SAML Authentication Bypass via Attribute Smuggling
Published: 5/6/2025Modified: 5/7/2025
Also known as:GHSA-8gqj-226h-gm8r
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.
Affected packages (1)
- npm/passport-wsfed-saml2>= 3.0.5, < 4.6.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 |