auth0 Auth0-PHP up to 8.13.x Authentication Tag improper authentication

Summaryinfo

A vulnerability was found in auth0 Auth0-PHP up to 8.13.x. It has been declared as critical. This issue affects some unknown processing of the component Authentication Tag Handler. The manipulation results in improper authentication. This vulnerability is identified as CVE-2025-47275. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in auth0 Auth0-PHP up to 8.13.x. Affected is some unknown processing of the component Authentication Tag Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality. CVE summarizes:

Auth0-PHP provides the PHP SDK for Auth0 Authentication and Management APIs. Starting in version 8.0.0-BETA1 and prior to version 8.14.0, session cookies of applications using the Auth0-PHP SDK configured with CookieStore have authentication tags that can be brute forced, which may result in unauthorized access. Certain pre-conditions are required to be vulnerable to this issue: Applications using the Auth0-PHP SDK, or the Auth0/symfony, Auth0/laravel-auth0, and Auth0/wordpress SDKs that rely on the Auth0-PHP SDK; and session storage configured with CookieStore. Upgrade Auth0/Auth0-PHP to v8.14.0 to receive a patch. As an additional precautionary measure, rotating cookie encryption keys is recommended. Note that once updated, any previous session cookies will be rejected.

The advisory is available at github.com. This vulnerability is traded as CVE-2025-47275 since 05/05/2025. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

Upgrading to version 8.14.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 52a79480fdb246f59dbc089b81a784ae049bd389 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

• Programming Language Software

Vendor

• auth0

Name

• Auth0-PHP

Version

• 8.0
• 8.1
• 8.2
• 8.3
• 8.4
• 8.5
• 8.6
• 8.7
• 8.8
• 8.9
• 8.10
• 8.11
• 8.12
• 8.13

License

• open-source

Website

• Product: https://github.com/auth0/auth0-PHP/

CPE 2.3info

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CPE 2.2info

• 🔍
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