{"id":"GHSA-f3r2-88mq-9v4g","aliases":[],"status":"published","title":"Auth0 Symfony SDK has Improper Audience Validation via Auth0-PHP SDK","description":"### Description\nIn applications built with the Auth0-PHP SDK, the audience validation in access tokens is performed improperly. Without proper validation, affected applications may accept ID tokens as Access tokens.\n\n### Affected product and versions\nProjects are affected if they meet the following preconditions:\n\n- Applications using the Auth0 Symfony SDK with versions between 5.0.0 and 5.5.0\n- Auth0 Symfony SDK uses the Auth0-PHP SDK with versions between 8.0.0 and 8.17.0.\n\n### Resolution\nUpgrade Auth0/symfony to version 5.6.0 or greater.\n\n### Acknowledgement\nOkta would like to thank Jafar Sadiq (iaf4r) for their discovery and responsible disclosure.","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"medium","from":"ghsa"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1395","CWE-345","CWE-863"],"published":"2025-12-17T20:56:37Z","modified":"2026-02-04T04:20:53Z","fixes":[{"ecosystem":"Packagist","package":"auth0/symfony","fixed_in":["5.6.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"auth0/symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.0.0"},{"last_affected":"5.5.0"},{"fixed":"5.6.0"}]}]},{"source":"osv","ecosystem":"Packagist","package":"auth0/symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.0.0"},{"fixed":"5.6.0"}]}],"versions":["5.0.0","5.1.0","5.2.0","5.2.1","5.2.2","5.2.3","5.3.0","5.3.1","5.4.0","5.4.1","5.5.0"]}],"references":[{"url":"https://github.com/auth0/symfony/security/advisories/GHSA-f3r2-88mq-9v4g","tags":["web"]},{"url":"https://github.com/auth0/symfony/commit/0103d6f8dcef6996653fad1f823d1c167f472479","tags":["web"]},{"url":"https://github.com/auth0/symfony/releases/tag/5.6.0","tags":["web"]},{"url":"https://github.com/advisories/GHSA-f3r2-88mq-9v4g"},{"url":"https://github.com/auth0/symfony","tags":["package"]}],"sources":{"ghsa":[{"id":"GHSA-f3r2-88mq-9v4g","title":"Auth0 Symfony SDK has Improper Audience Validation via Auth0-PHP SDK","description":"### Description\nIn applications built with the Auth0-PHP SDK, the audience validation in access tokens is performed improperly. Without proper validation, affected applications may accept ID tokens as Access tokens.\n\n### Affected product and versions\nProjects are affected if they meet the following preconditions:\n\n- Applications using the Auth0 Symfony SDK with versions between 5.0.0 and 5.5.0\n- Auth0 Symfony SDK uses the Auth0-PHP SDK with versions between 8.0.0 and 8.17.0.\n\n### Resolution\nUpgrade Auth0/symfony to version 5.6.0 or greater.\n\n### Acknowledgement\nOkta would like to thank Jafar Sadiq (iaf4r) for their discovery and responsible disclosure.","status":"published","published":"2025-12-17T20:56:37Z","modified":"2025-12-17T20:56:38Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"cwes":["CWE-345","CWE-863","CWE-1395"],"updated_at":"2026-11-02T14:39:13.204325Z"}],"osv":[{"id":"GHSA-f3r2-88mq-9v4g","title":"Auth0 Symfony SDK has Improper Audience Validation via Auth0-PHP SDK","description":"### Description\nIn applications built with the Auth0-PHP SDK, the audience validation in access tokens is performed improperly. Without proper validation, affected applications may accept ID tokens as Access tokens.\n\n### Affected product and versions\nProjects are affected if they meet the following preconditions:\n\n- Applications using the Auth0 Symfony SDK with versions between 5.0.0 and 5.5.0\n- Auth0 Symfony SDK uses the Auth0-PHP SDK with versions between 8.0.0 and 8.17.0.\n\n### Resolution\nUpgrade Auth0/symfony to version 5.6.0 or greater.\n\n### Acknowledgement\nOkta would like to thank Jafar Sadiq (iaf4r) for their discovery and responsible disclosure.","status":"published","published":"2025-12-17T20:56:37Z","modified":"2026-02-04T04:20:53.842098Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"cwes":["CWE-1395","CWE-345","CWE-863"],"updated_at":"2026-11-02T15:46:45.639885Z"}]}}