Insufficient Session Expiration Affecting auth0-js package, versions >=9.12.0 <10.3.0
Threat Intelligence
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- published14 Oct 2026
- disclosed13 Oct 2026
- creditUnknown
Introduced: 13 Oct 2026
NewCVE-2026-107371 (opens in a new tab)How to fix?
Upgrade auth0-js to version 10.3.0 or higher.
Overview
auth0-js is an Auth0 headless browser sdk
Affected versions of this package are vulnerable to Insufficient Session Expiration via the WebAuth authorize/parseHash transaction flow in src/web-auth/index.js and src/web-auth/transaction-manager.js. An attacker can submit an ID token from an older authentication event by using a request with maxAge set and then returning a stale token in the callback, causing the application to accept an authentication session that is older than the requested maximum age. This lets the attacker bypass freshness checks on login and the user’s application may process a token representing an authentication that should have been rejected.