CVE-2025-68129: symfony Auth Bypass — Fix

Description

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.

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CVSS v3.1 Score

6.8

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Weakness Type (CWE)

CWE-863 Incorrect Authorization

Affected Products

Vendor	Product	Versions
auth0	auth0-php	8.0.0 — 8.18.0
auth0	laravel-auth0	7.0.0 — 7.20.0
auth0	symfony	5.0.0 — 5.6.0
auth0	wp-auth0	5.0.0 — 5.5.0

References

Advisories & Patches

Other References

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

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 6.8 (MEDIUM).

How severe is CVE-2025-68129? +

CVE-2025-68129 has a CVSS v3.1 score of 6.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-68129? +

CVE-2025-68129 affects products from auth0, specifically: auth0-php, laravel-auth0, symfony, wp-auth0. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-68129? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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