CVE-2026-34236
Auth0 PHP SDK Insufficient Entropy in Cookie Encryption
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th
Auth0-PHP is a PHP SDK for Auth0 Authentication and Management APIs. From version 8.0.0 to before version 8.19.0, 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. This issue has been patched in version 8.19.0.
| CWE | CWE-331 |
| Vendor | auth0 |
| Product | auth0-php |
| Published | Apr 1, 2026 |
| Last Updated | Apr 1, 2026 |
Stay Ahead of the Next One
Get instant alerts for auth0 auth0-php
Be the first to know when new high vulnerabilities affecting auth0 auth0-php are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
auth0 / auth0-PHP
>= 8.0.0, < 8.19.0