CVE-2026-34236CWE-331

Auth0 PHP SDK Insufficient Entropy in Cookie Encryption

High · published April 1, 2026

CVSS v3.1
8.2
EPSS
0%
Percentile
24.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00323 · 24.1th percentile
Weakness
CWE-331 · Insufficient Entropy
Published
2026-04-01T17:04Z
EPSS history
Timeline
  • 01 APR 17:04Z
    Auth0 PHP SDK Insufficient Entropy in Cookie Encryption
    cvelistv5