What’s Vulnerable › Vulnerabilities

CVE-2022-23505: Passport-wsfed-saml2 vulnerable to Authentication Bypass for WSFed authentication

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-12-13 · updated 2026-06-17
• Weakness: CWE-287

Description

Passport-wsfed-saml2 is a ws-federation protocol and SAML2 tokens authentication provider for Passport. In versions prior to 4.6.3, a remote attacker may be able to bypass WSFed authentication on a website using passport-wsfed-saml2. A successful attack requires that the attacker is in possession of an arbitrary IDP signed assertion. Depending on the IDP used, fully unauthenticated attacks (e.g without access to a valid user) might also be feasible if generation of a signed message can be triggered. This issue is patched in version 4.6.3. Use of SAML2 authentication instead of WSFed is a workaround.

Affected products

• auth0 passport-wsfed-saml2: through 4.6.2

References

• https://github.com/auth0/passport-wsfed-saml2/security/advisories/GHSA-ppjq-qxhx-m25f
• https://github.com/auth0/passport-wsfed-saml2/security/advisories/GHSA-ppjq-qxhx-m25f

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