{"id":"CVE-2025-47275","aliases":["EUVD-2025-28079","GHSA-g98g-r7gf-2r25"],"status":"published","title":"Brute Force Authentication Tags of CookieStore Sessions in Auth0-PHP SDK","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.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00539,"percentile":0.45882,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-287"],"published":"2025-05-15T21:13:01Z","modified":"2026-11-11T02:48:25Z","fixes":[{"ecosystem":"Packagist","package":"auth0/auth0-php","fixed_in":["8.14.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"auth0/auth0-php","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.0.0-BETA1"},{"fixed":"8.14.0"}]}]},{"source":"osv","ecosystem":"Packagist","package":"auth0/auth0-php","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.0.0-BETA1"},{"fixed":"8.14.0"}]}],"versions":["8.0.0","8.0.0-BETA1","8.0.0-BETA2","8.0.0-BETA3","8.0.1","8.0.2","8.0.3","8.0.4","8.0.5","8.0.6","8.1.0","8.10.0","8.11.0","8.11.1","8.12.0","8.13.0","8.2.0","8.2.1","8.3.0","8.3.1","8.3.2","8.3.3","8.3.4","8.3.5","8.3.6","8.3.7","8.3.8","8.4.0","8.5.0","8.6.0","8.7.0","8.7.1","8.8.0","8.9.0","8.9.1","8.9.3"]}],"products":[{"vendor":"auth0","product":"auth0-php"}],"references":[{"url":"https://github.com/auth0/auth0-PHP/security/advisories/GHSA-g98g-r7gf-2r25","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/auth0/laravel-auth0/security/advisories/GHSA-9fwj-9mjf-rhj3","tags":["x_refsource_MISC","advisory","web"]},{"url":"https://github.com/auth0/symfony/security/advisories/GHSA-9wg9-93h9-j8ch","tags":["x_refsource_MISC","advisory","web"]},{"url":"https://github.com/auth0/wordpress/security/advisories/GHSA-2f4r-34m4-3w8q","tags":["x_refsource_MISC","advisory","web"]},{"url":"https://github.com/auth0/auth0-PHP/commit/52a79480fdb246f59dbc089b81a784ae049bd389","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/auth0/auth0-PHP/releases/tag/8.14.0","tags":["x_refsource_MISC","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-47275","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-g98g-r7gf-2r25"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/47xxx/CVE-2025-47275.json","tags":["advisory"]},{"url":"https://github.com/auth0/auth0-PHP","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-47275","title":"Brute Force Authentication Tags of CookieStore Sessions in Auth0-PHP SDK","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.","status":"published","published":"2025-05-15T21:13:01.15Z","modified":"2025-05-22T20:03:34.201Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"cna"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:32:26.320248Z"}],"euvd":[{"id":"EUVD-2025-28079","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.","status":"published","published":"2025-05-15T21:13:01Z","modified":"2025-05-22T20:03:34Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T20:32:39.383071Z"}],"ghsa":[{"id":"GHSA-g98g-r7gf-2r25","title":"Brute Force Authentication Tags of CookieStore Sessions in Auth0-PHP SDK","description":"**Overview**\nSession 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.\n\n**Am I Affected?**\nYou are affected by this vulnerability if you meet the following pre-conditions:\n1. Applications using the Auth0-PHP SDK, or the following SDKs that rely on the Auth0-PHP SDK:\n    a. Auth0/symfony,\n    b. Auth0/laravel-auth0,\n    c. Auth0/wordpress,\n2. Session storage configured with CookieStore.\n\n**Fix**\nUpgrade Auth0/Auth0-PHP to v8.14.0. As an additional precautionary measure, we recommend rotating your cookie encryption keys. Note that once updated, any previous session cookies will be rejected.\n\n**Acknowledgement**\nOkta would like to thank Félix Charette for discovering this vulnerability.","status":"published","published":"2025-05-16T17:48:55Z","modified":"2025-05-22T20:03:16Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:38:43.998596Z"}],"nvd":[{"id":"CVE-2025-47275","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.","status":"published","published":"2025-05-15T22:15:18.667Z","modified":"2026-06-17T09:27:39.053Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"secondary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:11:08.321805Z"}],"osv":[{"id":"CVE-2025-47275","title":"Brute Force Authentication Tags of CookieStore Sessions in Auth0-PHP SDK","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.","status":"published","published":"2025-05-15T21:13:01.15Z","modified":"2026-11-11T10:47:21.159004102Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-287"],"updated_at":"2026-11-11T03:22:10.237529Z"},{"id":"GHSA-g98g-r7gf-2r25","title":"Brute Force Authentication Tags of CookieStore Sessions in Auth0-PHP SDK","description":"**Overview**\nSession 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.\n\n**Am I Affected?**\nYou are affected by this vulnerability if you meet the following pre-conditions:\n1. Applications using the Auth0-PHP SDK, or the following SDKs that rely on the Auth0-PHP SDK:\n    a. Auth0/symfony,\n    b. Auth0/laravel-auth0,\n    c. Auth0/wordpress,\n2. Session storage configured with CookieStore.\n\n**Fix**\nUpgrade Auth0/Auth0-PHP to v8.14.0. As an additional precautionary measure, we recommend rotating your cookie encryption keys. Note that once updated, any previous session cookies will be rejected.\n\n**Acknowledgement**\nOkta would like to thank Félix Charette for discovering this vulnerability.","status":"published","published":"2025-05-16T17:48:55Z","modified":"2026-02-04T04:04:22.25357Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:46:47.472172Z"}]}}