Ad

CVE-2026-34236

CRITICAL CVSS 3.1: 9.8 EPSS 0.01%
Updated Apr 07, 2026
PHP
Parameter Value
CVSS 9.8 (CRITICAL)
Affected Versions 8.0.0 — 8.19.0
Fixed In 8.19.0
Type CWE-331
Vendor PHP
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Auth0 Auth0-Php
cpe:2.3:a:auth0:auth0-php:*:*:*:*:*:*:*:*
8.0.0 8.19.0