GHSA-w3wc-44p4-m4j7HighCVSS 8.2

Auth0 PHP SDK has Insufficient Entropy in Cookie Encryption

Published
April 1, 2026
Last Modified
April 1, 2026

🔗 CVE IDs covered (1)

CVE-2026-34236 →

📋 Description

Impact

In applications built with the Auth0 PHP SDK, cookies are encrypted with insufficient entropy, which may result in threat actors brute-forcing the encryption key and forging session cookies.

Am I Affected?

Consumers are affected if their application meets the following preconditions:

  • Their application is using the Auth0-PHP SDK, versions between 8.0.0 and 8.18.0
  • Their application is using the Auth0-PHP SDK, or the following SDKs that rely on the Auth0-PHP SDK:
    • Auth0/symfony,
    • Auth0/laravel0-auth0, or
    • Auth0/wordpress

Resolution

Upgrade Auth0/Auth0-PHP to version 8.19.0 or greater.

🎯 Affected products1

  • composer/auth0/auth0-php:>= 8.0.0, <= 8.18.0

🔗 References (4)