{"id":"GHSA-862m-5253-832r","aliases":[],"url":"https://o3.security/vulnerability/GHSA-862m-5253-832r","summary":"Auth0 Wordpress Plugin vulnerable to Deserialization of Untrusted Data","details":"**Overview**\nThe Auth0 Wordpress plugin contains a critical 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.\n\n**Am I Affected?**\nYou are affected by this vulnerability if you meet the following preconditions:\n\n1. Applications using the Auth0 WordPress plugin, versions between 5.0.0 BETA-0 to 5.0.1. \n2. Auth0 WordPress plugin uses the Auth0-PHP SDK with version 8.0.0-BETA3 to 8.3.0.\n\n**Fix**\nUpgrade the Auth0 WordPress plugin to the latest version (v5.3.0).","published":"2025-06-05T01:19:24Z","modified":"2026-02-04T02:51:35.717732Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"auth0/wordpress","fixedVersion":"5.1.0"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/auth0/auth0-PHP/security/advisories/GHSA-v9m8-9xxp-q492"},{"type":"WEB","url":"https://github.com/auth0/laravel-auth0/security/advisories/GHSA-c42h-56wx-h85q"},{"type":"WEB","url":"https://github.com/auth0/symfony/security/advisories/GHSA-98j6-67v3-mw34"},{"type":"WEB","url":"https://github.com/auth0/wordpress/security/advisories/GHSA-862m-5253-832r"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-48951"},{"type":"PACKAGE","url":"https://github.com/auth0/wordpress"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-02-04T02:51:35.717732Z"}}