Auth0-PHP SDK has Improper Audience Validation
Description
In applications built with the Auth0-PHP SDK, the audience validation in access tokens is performed improperly. Without proper validation, affected applications may accept ID tokens as Access tokens.
Affected product and versions
Projects are affected if they meet the following preconditions:
- Applications using the Auth0-PHP SDK, versions between v8.0.0 and v8.17.0, or
- Applications using the following SDKs that rely on the Auth0-PHP SDK versions between v8.0.0 and v8.17.0:
- a. Auth0/symfony,
- b. Auth0/laravel-auth0,
- c. Auth0/wordpress.
Resolution
Upgrade Auth0/Auth0-PHP to version 8.18.0 or greater.
Acknowledgement
Okta would like to thank Jafar Sadiq (iaf4r) for their discovery and responsible disclosure.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | auth0/auth0-php | >= 8.0.0, < 8.18.0 | 8.18.0 |
References
- https://github.com/auth0/auth0-PHP/security/advisories/GHSA-j2vm-wrq3-f7gf
- https://github.com/auth0/laravel-auth0/security/advisories/GHSA-7hh9-gp72-wh7h
- https://github.com/auth0/symfony/security/advisories/GHSA-f3r2-88mq-9v4g
- https://github.com/auth0/wordpress/security/advisories/GHSA-vvg7-8rmq-92g7
- https://nvd.nist.gov/vuln/detail/CVE-2025-68129
- https://github.com/auth0/auth0-PHP/commit/7fe700053aee609718460c123f00f53c511f0f7f
- https://github.com/auth0/laravel-auth0/commit/a1c3344dc0e5a36e8f56c8cfc535728d3d7558f3
- https://github.com/auth0/symfony/commit/0103d6f8dcef6996653fad1f823d1c167f472479
- https://github.com/auth0/wordpress/commit/b207c6f7fd06507b90c4e6bcc18a857ef9e018de
- https://github.com/auth0/auth0-PHP
- https://github.com/auth0/auth0-PHP/releases/tag/8.18.0
- https://github.com/auth0/laravel-auth0/releases/tag/7.20.0
- https://github.com/auth0/symfony/releases/tag/5.6.0
- https://github.com/auth0/wordpress/releases/tag/5.5.0
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N- Weakness (CWE)
CWE-863- Platform
- Composer
- Package
auth0/auth0-php- Disclosed
- 17.12.2025
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-j2vm-wrq3-f7gf - CC BY 4.0
Vulnerability history: auth0/auth0-php
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 5
- First → latest
- 05.2025 04.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 1
- Medium 1
- Low 1
Disclosures per year
- 2025: 4
- 2026: 1
-
Auth0-PHP SDK has Improper Audience Validation this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.