CVE-2025-47275: Auth Bypass (CVSS 9.1)

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.

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CVSS v3.1 Score

9.1

CRITICAL

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

Weakness Type (CWE)

CWE-287 Improper Authentication

References

Other References

https://github.com/auth0/auth0-PHP/commit/52a79480fdb246f59dbc089b81a784ae049bd389 https://github.com/auth0/auth0-PHP/releases/tag/8.14.0 https://github.com/auth0/auth0-PHP/security/advisories/GHSA-g98g-r7gf-2r25 https://github.com/auth0/laravel-auth0/security/advisories/GHSA-9fwj-9mjf-rhj3 https://github.com/auth0/symfony/security/advisories/GHSA-9wg9-93h9-j8ch https://github.com/auth0/wordpress/security/advisories/GHSA-2f4r-34m4-3w8q

Frequently Asked Questions

What is CVE-2025-47275? +

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. It has a CVSS v3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2025-47275? +

CVE-2025-47275 has a CVSS v3.1 score of 9.1 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

How do I check if I'm vulnerable to CVE-2025-47275? +

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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