auth0/auth0-php · Security
Auth0 PHP SDK has Insufficient Entropy in Cookie Encryption
- GHSA ID
- GHSA-w3wc-44p4-m4j7
- CVE ID
- CVE-2026-34236
- Severity
- high
- Published
- Updated
- CVSS
- 8.2 · CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
- CVSS v3
- 8.2 · CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
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.
CWEs
- CWE-331 · Insufficient Entropy