CVE-2025-48951CWE-502

Auth0-PHP SDK Deserialization of Untrusted Data vulnerability

Critical · published June 3, 2025

CVSS v4.0
9.3
EPSS
1%
Percentile
54.3
In the wild
Unconfirmed
What it is

Auth0-PHP is a PHP SDK for Auth0 Authentication and Management APIs. Versions 8.0.0-BETA3 prior to 8.3.1 contain a vulnerability due to insecure deserialization of cookie data. If exploited, since SDKs process cookie content without prior authentication, a threat actor could send a specially crafted cookie containing malicious serialized data. Applications using the Auth0-PHP SDK are affected, as are applications using the Auth0/symfony, Auth0/laravel-auth0, or Auth0/wordpress SDKs, because those SDKsrely on the Auth0-PHP SDK versions from 8.0.0-BETA3 until 8.14.0. Version 8.3.1 contains a patch for the issue.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H
EPSS
0.00746 · 54.3th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2025-06-03T20:52Z
EPSS history
Timeline
  • 03 JUN 20:52Z
    Auth0-PHP SDK Deserialization of Untrusted Data vulnerability
    cvelistv5