Auth bypass in Auth0 Auth0-Php
CVE-2025-68129
Auth0-PHP is a PHP SDK for Auth0 Authentication and Management APIs. 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. Projects are affected if they use 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: Auth0/symfony versions between 5.0.0 and 5.5.0, Auth0/laravel-auth0 versions between 7.0.0 and 7.19.0, and/or Auth0/wordpress plugin versions between 5.0.0-BETA0 and 5.4.0. Auth0/Auth0-PHP version 8.18.0 contains a patch for the issue.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: -0.000
Affected products
- Auth0 Auth0-Php — versions >= 8.0.0, < 8.18.0
- Auth0 Laravel-Auth0
- Auth0 Symfony
- Auth0 Wp-Auth0
Weakness classification (CWE)
References
- github.com/auth0/auth0-PHP/security/advisories/GHSA-j2vm-wrq3-f7gf (Vendor Advisory)
- github.com/auth0/laravel-auth0/security/advisories/GHSA-7hh9-gp72-wh7h (Vendor Advisory)
- github.com/auth0/symfony/security/advisories/GHSA-f3r2-88mq-9v4g (Vendor Advisory)
- github.com/auth0/wordpress/security/advisories/GHSA-vvg7-8rmq-92g7 (Vendor Advisory)
- github.com/auth0/auth0-PHP/commit/7fe700053aee609718460c123f00f53c511f0f7f (Patch)
- github.com/auth0/laravel-auth0/commit/a1c3344dc0e5a36e8f56c8cfc535728d3d7558f3 (Patch)
- github.com/auth0/symfony/commit/0103d6f8dcef6996653fad1f823d1c167f472479 (Patch)
- github.com/auth0/wordpress/commit/b207c6f7fd06507b90c4e6bcc18a857ef9e018de (Patch)
- github.com/auth0/auth0-PHP/releases/tag/8.18.0 (Product, Release Notes)
- github.com/auth0/laravel-auth0/releases/tag/7.20.0 (Product, Release Notes)
Frequently asked questions
- What is CVE-2025-68129?
- CVE-2025-68129 is a medium-severity vulnerability in Auth0 Auth0-Php, classified under Incorrect Authorization. CVSS score: 6.8/10. Published 2025-12-17.
- How severe is CVE-2025-68129?
- Medium severity. CVSS v3 base score is 6.8 out of 10.