GHSA-v9m8-9xxp-q492

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Source
https://github.com/advisories/GHSA-v9m8-9xxp-q492
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/06/GHSA-v9m8-9xxp-q492/GHSA-v9m8-9xxp-q492.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-v9m8-9xxp-q492
Aliases
Related
Published
2025-06-04T20:31:39Z
Modified
2026-02-04T04:39:22.262305Z
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-PHP SDK Deserialization of Untrusted Data vulnerability
Details

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.

Database specific 
{
    "github_reviewed_at": "2025-06-04T20:31:39Z",
    "github_reviewed": true,
    "severity": "CRITICAL",
    "nvd_published_at": "2025-06-03T21:15:21Z",
    "cwe_ids": [
        "CWE-502"
    ]
}
References

Affected packages

Packagist / auth0/auth0-php

Package

Name
auth0/auth0-php
Purl
pkg:composer/auth0/auth0-php

Affected ranges

Type
ECOSYSTEM
Events
Introduced
8.0.0-BETA3
Fixed
8.3.1

Affected versions

8.*
8.0.0-BETA3
8.0.0
8.0.1
8.0.2
8.0.3
8.0.4
8.0.5
8.0.6
8.1.0
8.2.0
8.2.1
8.3.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/06/GHSA-v9m8-9xxp-q492/GHSA-v9m8-9xxp-q492.json"