{"id":"CVE-2018-14774","details":"An issue was discovered in HttpKernel in Symfony 2.7.0 through 2.7.48, 2.8.0 through 2.8.43, 3.3.0 through 3.3.17, 3.4.0 through 3.4.13, 4.0.0 through 4.0.13, and 4.1.0 through 4.1.2. When using HttpCache, the values of the X-Forwarded-Host headers are implicitly set as trusted while this should be forbidden, leading to potential host header injection.","aliases":["GHSA-66p6-7p29-55p9"],"modified":"2026-08-07T14:58:22.255425Z","published":"2018-08-03T17:29:00.347Z","references":[{"type":"FIX","url":"https://github.com/symfony/symfony/commit/725dee4cd8b4ccd52e335ae4b4522242cea9bd4a"},{"type":"FIX","url":"https://symfony.com/blog/cve-2018-14774-possible-host-header-injection-when-using-httpcache"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/symfony/security-http","events":[{"introduced":"de2f3d51160791ef254010953dbde178fee9845f"},{"last_affected":"682c866cd03064d74c884ba67ff0db212dba5575"},{"introduced":"a8d5dd00894f8b5e3edb897f4504c51ddc442370"},{"last_affected":"892403bc54ac626fc2f55d7a806881af070856c4"},{"introduced":"760872233cd3147870184697e3481ffa492ac2fb"},{"last_affected":"7cb076f64ed0310504caaad1180a211be949c5db"},{"introduced":"33c98765dc6fec4907b7431d10e3c0945f061108"},{"last_affected":"b73082eefd5febf28872914801eb66fe53bceae1"},{"introduced":"afa69c531f22fb4b9fc95017ec0e5d6c77db0c3c"},{"last_affected":"4d9d4d78bf42b47cd083780c11ee110b79c59e99"},{"introduced":"946668ddc1fa0279fe03e2c090ebc29881f12ddb"},{"last_affected":"30d31b4c5a97c0a23ee5b6aa8343a2745e824145"}],"database_specific":{"cpe":"cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"2.7.0"},{"last_affected":"2.7.48"},{"introduced":"2.8.0"},{"last_affected":"2.8.43"},{"introduced":"3.3.0"},{"last_affected":"3.3.17"},{"introduced":"3.4.0"},{"last_affected":"3.4.13"},{"introduced":"4.0.0"},{"last_affected":"4.0.13"},{"introduced":"4.1.0"},{"last_affected":"4.1.2"}],"source":"CPE_RANGE"}}],"versions":["v2.7.49","v2.7.48","v4.1.2","v4.0.13","v4.0.12","v3.4.13","v2.8.43","v2.8.42","v3.4.12","v4.1.1","v4.1.0-BETA3","v4.1.0","v4.0.11","v3.4.11","v2.8.41","v3.3.18","v3.3.17","v4.0.10","v3.4.10","v3.3.16","v2.8.40","v2.7.47","v3.4.9","v3.4.8","v3.4.7","v3.4.6","v3.4.5","v2.8.39","v2.8.38","v2.8.37","v2.8.36","v2.8.35","v2.7.46","v2.7.45","v2.7.44","v2.7.43","v2.7.42","v4.0.9","v4.0.8","v4.0.7","v4.0.6","v4.0.5","v4.0.4","v3.4.4","v2.7.41","v2.8.34","v2.7.39","v2.7.38","v4.0.3","v3.4.3","v3.3.15","v2.8.33","v2.7.40","v4.0.2","v4.0.1","v4.0.0-RC2","v4.0.0","v3.4.2","v3.4.1","v3.4.0-RC2","v3.4.0-RC1","v3.4.0","v3.3.14","v3.3.13","v2.8.32","v2.8.31","v3.3.12","v3.3.11","v2.8.30","v2.8.29","v2.7.37","v2.7.36","v3.3.10","v2.8.28","v2.7.35","v2.7.34","v3.3.9","v3.3.8","v3.3.7","v2.8.27","v2.8.26","v2.7.33","v3.3.6","v3.3.5","v3.3.4","v3.3.3","v2.8.25","v2.8.24","v2.8.23","v2.7.32","v2.7.31","v2.7.30","v3.3.2","v3.3.1","v3.3.0","v2.8.22","v2.7.29","v2.8.21","v2.7.28","v2.8.20","v2.7.27","v2.8.19","v2.7.26","v2.8.18","v2.7.25","v2.8.17","v2.8.16","v2.7.24","v2.7.23","v2.8.15","v2.7.22","v2.8.14","v2.8.13","v2.8.12","v2.8.11","v2.7.21","v2.7.20","v2.7.19","v2.7.18","v2.8.10","v2.7.17","v2.8.9","v2.7.16","v2.7.15","v2.8.8","v2.8.7","v2.8.6","v2.7.14","v2.7.13","v2.8.5","v2.7.12","v2.8.4","v2.8.3","v2.7.10","v2.8.2","v2.7.9","v2.8.1","v2.7.8","v2.8.0","v2.7.7","v2.7.6","v2.7.5","v2.7.4","v2.7.3","v2.7.2","v2.7.1","v2.7.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-14774.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/symfony/symfony","events":[{"introduced":"9975b1eca3de4db792a2c3e4e16f676a4aadcd46"},{"last_affected":"34d6116e2b80351c5a6f591285a4e9381b0dd127"},{"introduced":"5615b92cd452cd54f1433a3f53de87c096a1107f"},{"last_affected":"e7f50768f107fa951f4c80dc447b893502cf2e89"},{"introduced":"5a7e31c48e7cd4831efa409fffb661beb9995174"},{"last_affected":"4639525c796227ec36652ad97192a5eb3de74f76"},{"introduced":"0a47db379b8cc74cdd84e1e6870fafc4a4ac8351"},{"last_affected":"c406c5a4f11fc00b60d3ec585125350418c4568d"},{"introduced":"26ca7023b1c45dce951da7206ed70049267d27bc"},{"last_affected":"b2fc878468756fbfac367a48a1060bbf3974e9be"},{"introduced":"58261043876feb695640457c5675bb331a6eb3b7"},{"last_affected":"c42cc18492fe7bbfc507822ac62e3179a6518d71"},{"fixed":"725dee4cd8b4ccd52e335ae4b4522242cea9bd4a"}],"database_specific":{"cpe":"cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"2.7.0"},{"last_affected":"2.7.48"},{"introduced":"2.8.0"},{"last_affected":"2.8.43"},{"introduced":"3.3.0"},{"last_affected":"3.3.17"},{"introduced":"3.4.0"},{"last_affected":"3.4.13"},{"introduced":"4.0.0"},{"last_affected":"4.0.13"},{"introduced":"4.1.0"},{"last_affected":"4.1.2"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["v3.3.17","v2.7.48","v4.1.2","v4.0.13","v3.4.13","v2.8.43","v3.4.12","v4.1.1","v4.0.12","v2.8.42","v4.1.0","v4.0.11","v3.4.11","v2.8.41","v4.0.10","v3.4.10","v2.8.40","v2.7.47","v4.0.9","v3.4.9","v2.8.39","v2.7.46","v4.0.8","v3.4.8","v2.8.38","v2.7.45","v4.0.7","v3.4.7","v2.8.37","v2.7.44","v4.0.6","v3.4.6","v2.8.36","v2.7.43","v4.0.5","v3.4.5","v2.8.35","v2.7.42","v4.0.4","v3.4.4","v3.3.16","v2.8.34","v2.7.41","v4.0.3","v3.4.3","v3.3.15","v2.8.33","v2.7.40","v4.0.2","v3.4.2","v4.0.1","v3.4.1","v3.3.14","v2.8.32","v2.7.39","v4.0.0","v3.4.0","v3.3.13",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