GHSA-98j6-67v3-mw34

Suggest an improvement
Source
https://github.com/advisories/GHSA-98j6-67v3-mw34
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/06/GHSA-98j6-67v3-mw34/GHSA-98j6-67v3-mw34.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-98j6-67v3-mw34
Related
Published
2025-06-06T00:07:08Z
Modified
2025-06-06T00:27:00.066692Z
Severity
  • 9.3 (Critical) CVSS_V4 - 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 CVSS Calculator
Summary
Auth0 Symfony SDK Deserialization of Untrusted Data vulnerability
Details

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.

Database specific 
{
    "nvd_published_at": null,
    "cwe_ids": [
        "CWE-502"
    ],
    "severity": "CRITICAL",
    "github_reviewed": true,
    "github_reviewed_at": "2025-06-06T00:07:08Z"
}
References

Affected packages

Packagist / auth0/symfony

Package

Name
auth0/symfony
Purl
pkg:composer/auth0/symfony

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.0.0-BETA0
Fixed
5.1.0

Affected versions

5.*

5.0.0-BETA0
5.0.0-BETA1
5.0.0

Database specific 

{
    "last_known_affected_version_range": "<= 5.0.0"
}