{"id":"GHSA-9wg9-93h9-j8ch","aliases":[],"status":"published","title":"Auth0 Symfony SDK Vulnerable to Brute Force Authentication Tags of CookieStore Sessions","description":"**Overview**\nSession cookies of applications using the Auth0 symfony 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 symfony SDK with version \u003c=5.3.1\n2. Auth0/Symfony SDK uses the Auth0-PHP SDK with version 8.0.0-BETA1 or higher and below 8.14.0. \n3. Session storage configured with CookieStore.\n\n\n**Fix**\nUpgrade Auth0/symfony to v5.4.0. 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.","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","from":"ghsa"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-287"],"published":"2025-05-17T15:06:54Z","modified":"2026-02-05T14:17:42Z","fixes":[{"ecosystem":"Packagist","package":"auth0/symfony","fixed_in":["5.4.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"auth0/symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0"}]}]},{"source":"osv","ecosystem":"Packagist","package":"auth0/symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0"}]}],"versions":["0.0.1","0.0.2","0.0.3","1.0.0","1.2.0","1.2.1","1.2.10","1.2.2","1.2.3","1.2.4","1.2.5","1.2.6","1.2.7","1.2.8","1.2.9","2.0.0","2.0.1","2.0.2","2.0.3","3.0.0","3.0.0-beta.1","3.0.0-beta.2","3.0.0-beta.3","3.0.0-beta.4","3.0.0-beta.5","3.0.0-rc.1","3.0.1","3.0.2","3.1.0","3.2.0","3.3.0","3.3.1","3.4.0","4.0.0","5.0.0","5.0.0-BETA0","5.0.0-BETA1","5.1.0","5.2.0","5.2.1","5.2.2","5.2.3","5.3.0","5.3.1"]}],"references":[{"url":"https://github.com/auth0/symfony/security/advisories/GHSA-9wg9-93h9-j8ch","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-47275","tags":["advisory"]},{"url":"https://github.com/auth0/symfony/commit/9a7294f08a32f17a0e77c8522a648195b6940340","tags":["web"]},{"url":"https://github.com/auth0/symfony/releases/tag/5.4.0","tags":["web"]},{"url":"https://github.com/advisories/GHSA-9wg9-93h9-j8ch"},{"url":"https://github.com/auth0/symfony","tags":["package"]}],"sources":{"ghsa":[{"id":"GHSA-9wg9-93h9-j8ch","title":"Auth0 Symfony SDK Vulnerable to Brute Force Authentication Tags of CookieStore Sessions","description":"**Overview**\nSession cookies of applications using the Auth0 symfony 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 symfony SDK with version \u003c=5.3.1\n2. Auth0/Symfony SDK uses the Auth0-PHP SDK with version 8.0.0-BETA1 or higher and below 8.14.0. \n3. Session storage configured with CookieStore.\n\n\n**Fix**\nUpgrade Auth0/symfony to v5.4.0. 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":"2025-05-17T15:06:54Z","modified":"2025-05-17T15:06:55Z","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"}],"osv":[{"id":"GHSA-9wg9-93h9-j8ch","title":"Auth0 Symfony SDK Vulnerable to Brute Force Authentication Tags of CookieStore Sessions","description":"**Overview**\nSession cookies of applications using the Auth0 symfony 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 symfony SDK with version \u003c=5.3.1\n2. Auth0/Symfony SDK uses the Auth0-PHP SDK with version 8.0.0-BETA1 or higher and below 8.14.0. \n3. Session storage configured with CookieStore.\n\n\n**Fix**\nUpgrade Auth0/symfony to v5.4.0. 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":"2025-05-17T15:06:54Z","modified":"2026-02-05T14:17:42.152332Z","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":"2026-11-02T15:46:44.225359Z"}]}}