CVE-2025-47275

Brute Force Authentication Tags of CookieStore Sessions in Auth0-PHP SDK

Published May 15, 2025 CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-28079 Brute Force Authentication Tags of CookieStore Sessions in Auth0-PHP SDK
Github GHSA Github GHSA GHSA-g98g-r7gf-2r25 Brute Force Authentication Tags of CookieStore Sessions in Auth0-PHP SDK
History
Type Values Removed Values Added
Title Forgeable Encrypted Session Cookie in Apps Using Auth0-PHP SDK Brute Force Authentication Tags of CookieStore Sessions in Auth0-PHP SDK
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Forgeable Encrypted Session Cookie in Apps Using Auth0-PHP SDK
Weaknesses CWE-287
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

Subscriptions

No data.

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
May 22, 2025, 8:03 PM
Reserved
May 5, 2025, 4:53 PM
Status
Deferred
Published
May 15, 2025, 10:15 PM
Modified
Jun 17, 2026, 9:27 AM