CVE-2026-42280
7.1 · HIGHOverview
CVE-2026-42280 is a high-severity vulnerability affecting auth0 auth0.js. It was published on May 27, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
Auth0.js is a client-side JavaScript library for Auth0. From 8.11.0 to 9.32.0, under specific preconditions, the Auth0.js SDK may improperly return user profile information using a valid access token when a specifically crafted invalid ID token is provided. This vulnerability is fixed in 10.0.0.
Remediation
Check the references section for vendor advisories and patches from auth0. Update auth0.js to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| auth0 | auth0.js | >= 8.11.0, < 10.0.0 | Affected |
Frequently Asked Questions
What is CVE-2026-42280?
CVE-2026-42280 is a high-severity vulnerability affecting auth0 auth0.js. It was published on May 27, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).
How severe is CVE-2026-42280?
This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-42280?
Check the references section for vendor advisories and patches from auth0. Update auth0.js to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-42280?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-42280 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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