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Critical · 9.3 CVE-2025-48951 EUVD-2025-16787GHSA-v9m8-9xxp-q492

Auth0-PHP SDK Deserialization of Untrusted Data vulnerability

Published Jun 3, 2025 · Updated Jun 4, 2025 · Assigned by GitHub_M

Description

Auth0-PHP is a PHP SDK for Auth0 Authentication and Management APIs. Versions 8.0.0-BETA3 prior to 8.3.1 contain a vulnerability due to insecure deserialization of cookie data. If exploited, since SDKs process cookie content without prior authentication, a threat actor could send a specially crafted cookie containing malicious serialized data. Applications using the Auth0-PHP SDK are affected, as are applications using the Auth0/symfony, Auth0/laravel-auth0, or Auth0/wordpress SDKs, because those SDKsrely on the Auth0-PHP SDK versions from 8.0.0-BETA3 until 8.14.0. Version 8.3.1 contains a patch for the issue.

Affected products

VendorProductAffectedFixed
auth0 auth0-PHP >= 8.0.0-BETA3, < 8.3.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
Packagist auth0/auth0-php >= 8.0.0-BETA3, < 8.3.1 8.3.1 GHSA-v9m8-9xxp-q492

References