CVE-2026-34236
HIGH8.2EPSS 0.01%Auth0 PHP SDK has Insufficient Entropy in Cookie Encryption
Published: 4/1/2026Modified: 4/1/2026
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 packages (1)
- Packagist/auth0/auth0-php>= 8.0.0, < 8.19.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.2 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N |