CVE-2026-34236

Severity CVSS v4.0:

Pending analysis

Type:

CWE-331 Insufficient Entropy

Publication date:

01/04/2026

Last modified:

01/04/2026

Description

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 8.20 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x

8.20

Severity 3.x

HIGH

References to Advisories, Solutions, and Tools

https://github.com/auth0/auth0-PHP/releases/tag/8.19.0
https://github.com/auth0/auth0-PHP/security/advisories/GHSA-w3wc-44p4-m4j7