update: Upgrades auth0-js from ^9.29.0 to ^10.0.0#2810
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ankita10119
approved these changes
Jun 5, 2026
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Changes
Upgrades auth0-js from
^9.29.0to^10.0.0auth0-js v10 enforces strict token validation for HS256-signed tokens.
parseHash()will now return an invalid_token error instead of silently succeeding.This was never safe in a browser context, HS256 is a symmetric algorithm, meaning the same client secret is used to both sign and verify the token. Verifying HS256 in the browser would require exposing the client secret in JavaScript, which is a security vulnerability. auth0-js v9 worked around this by skipping verification entirely and silently passing the token through. v10 now correctly rejects it.
References