CVE-2025-48951 – auth0/auth0-php

Package

Manager: composer
Name: auth0/auth0-php
Vulnerable Version: >=8.0.0-beta3 <8.3.1

Severity

Level: Critical

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C

CVSS v4.0: 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: 0.00042 pctl0.11893

Details

Auth0-PHP SDK Deserialization of Untrusted Data vulnerability **Overview** The Auth0 PHP SDK contains 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. **Am I Affected?** You are affected by this vulnerability if you meet the following preconditions: 1. Applications using the Auth0-PHP SDK, versions between 8.0.0-BETA3 to 8.3.0. 2. Applications using the following SDKs that rely on the Auth0-PHP SDK versions between 8.0.0-BETA3 to 8.3.0: a. Auth0/symfony, b. Auth0/laravel-auth0, c. Auth0/wordpress. **Fix** Upgrade Auth0/Auth0-PHP to 8.3.1. **Acknowledgement** Okta would like to thank Andreas Forsblom for discovering this vulnerability.

Metadata

Created: 2025-06-04T20:31:39Z
Modified: 2025-06-04T22:56:42Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/06/GHSA-v9m8-9xxp-q492/GHSA-v9m8-9xxp-q492.json
CWE IDs: ["CWE-502"]
Alternative ID: GHSA-v9m8-9xxp-q492
Finding: F096
Auto approve: 1