GHSA-98j6-67v3-mw34 – auth0/symfony

Package

Manager: composer
Name: auth0/symfony
Vulnerable Version: >=5.0.0-beta0 <5.1.0

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: N/A pctlN/A

Details

Auth0 Symfony SDK Deserialization of Untrusted Data vulnerability **Overview** The Auth0 Symfony SDK contains a critical 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 Symfony SDK, versions between 5.0.0 BETA-0 to 5.0.0. 2. Auth0 Symfony SDK uses the Auth0-PHP SDK with version 8.0.0-BETA3 to 8.3.0. **Fix** Upgrade Auth0/symfony to the latest version (v5.4.0). **Acknowledgement** Okta would like to thank Andreas Forsblom for discovering this vulnerability.

Metadata

Created: 2025-06-06T00:07:08Z
Modified: 2025-06-06T00:07:08Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/06/GHSA-98j6-67v3-mw34/GHSA-98j6-67v3-mw34.json
CWE IDs: ["CWE-502"]
Alternative ID: N/A
Finding: F096
Auto approve: 1