{"id":"CVE-2019-18889","aliases":["GHSA-79gr-58r3-pwm3"],"url":"https://o3.security/vulnerability/CVE-2019-18889","summary":"Symfony Unsafe Cache Serialization Could Enable RCE","details":"An issue was discovered in Symfony 3.4.0 through 3.4.34, 4.2.0 through 4.2.11, and 4.3.0 through 4.3.7. Serializing certain cache adapter interfaces could result in remote code injection. This is related to symfony/cache.","published":"2019-11-21T23:15:13.607Z","modified":"2026-08-07T11:48:05.286233628Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.33247,"percentile":0.982,"asOf":"2026-07-28"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"symfony/cache","fixedVersion":"3.4.35"},{"ecosystem":"Packagist","name":"symfony/cache","fixedVersion":"4.2.12"},{"ecosystem":"Packagist","name":"symfony/cache","fixedVersion":"4.3.8"},{"ecosystem":"Packagist","name":"symfony/symfony","fixedVersion":"3.4.35"},{"ecosystem":"Packagist","name":"symfony/symfony","fixedVersion":"4.2.12"},{"ecosystem":"Packagist","name":"symfony/symfony","fixedVersion":"4.3.8"}],"fix":null,"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UED22BOXTL2SSFMGYKA64ZFHGLLJG3EA/"},{"type":"ADVISORY","url":"https://github.com/symfony/symfony/releases/tag/v4.3.8"},{"type":"ADVISORY","url":"https://symfony.com/blog/cve-2019-18889-forbid-serializing-abstractadapter-and-tagawareadapter-instances"},{"type":"ADVISORY","url":"https://symfony.com/blog/symfony-4-3-8-released"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-18889"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/cache/CVE-2019-18889.yaml"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2019-18889.yaml"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UED22BOXTL2SSFMGYKA64ZFHGLLJG3EA"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UED22BOXTL2SSFMGYKA64ZFHGLLJG3EA"},{"type":"WEB","url":"https://symfony.com/cve-2019-18889"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:48:05.286233628Z"}}