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TI-2025-29286 Aliases CVE-2025-46573GHSA-8gqj-226h-gm8r

passport-wsfed-saml2 Has SAML Authentication Bypass via Attribute Smuggling

Priority LOW 37CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-287.

Summary

passport-wsfed-saml2 provides passport strategy for both WS-fed and SAML2 protocol. A vulnerability present starting in version 3.0.5 up to and including version 4.6.3 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. Users are affected specifically when the service provider is using `passport-wsfed-saml2` and a valid SAML Response signed by the Identity Provider can be obtained. Version 4.6.4 contains a fix for the vulnerability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00381 32nd percentileScored 2026-11-07
Fix Fixed passport-wsfed-saml2 (auth0): 4.6.4passport-wsfed-saml2 (npm): 4.6.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
auth0passport-wsfed-saml23.0.5 to before 4.6.44.6.4Patch availableCNA
—passport-wsfed-saml2 (npm)3.0.5 to before 4.6.44.6.4Patch availableGHSA-8gqj-226h-gm8r
  • passport-wsfed-saml2 Vendorauth0 Affected 3.0.5 to before 4.6.4 Fixed in 4.6.4 Patch available CNA
  • passport-wsfed-saml2 (npm) Vendor— Affected 3.0.5 to before 4.6.4 Fixed in 4.6.4 Patch available GHSA-8gqj-226h-gm8r

Remediation

  • Fix · CNA passport-wsfed-saml2 (auth0) Fixed in 4.6.4
  • Fix · GHSA-8gqj-226h-gm8r passport-wsfed-saml2 (npm) Fixed in 4.6.4 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-46573
  2. 2026-10-03 Alias added: GHSA-8gqj-226h-gm8r

References

Advisory 1

Other 3

  • TI-2015-07615 Improper input validation in HackerOne jsonwebtoken node module CVSS 3.0CRITICAL 9.8
  • TI-2025-29805 Brute Force Authentication Tags of CookieStore Sessions in Auth0-PHP SDK CVSS 3.1CRITICAL 9.1
  • TI-2025-31089 Auth0-PHP SDK Deserialization of Untrusted Data vulnerability CVSS 4.0CRITICAL 9.3
  • TI-2020-06427 An issue was discovered in the Login by Auth0 plugin before 4.0.0 for WordPress. CVSS 3.1CRITICAL 9.8
  • TI-2018-05020 The Auth0 authentication service before 2017-10-15 allows privilege escalation because… CVSS 3.0CRITICAL 9.8
  • TI-2019-05387 Auth0 Auth0-WCF-Service-JWT before 1.0.4 leaks the expected JWT signature in an error… CVSS 3.0CRITICAL 9.8
See all 57 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences