{
    "id": "CVE-2019-18889",
    "published": "2019-11-21 23:15:13",
    "last_modified": "2026-06-17 02:25:32",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-94",
    "description": "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.",
    "epss_score": "0.33247",
    "epss_percentile": "0.98326",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-03 18:17:23",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 33.2% — above the 10% action threshold."
    },
    "products": [
        {
            "vendor": "fedoraproject",
            "product": "fedora"
        },
        {
            "vendor": "sensiolabs",
            "product": "symfony"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://github.com/symfony/symfony/releases/tag/v4.3.8",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UED22BOXTL2SSFMGYKA64ZFHGLLJG3EA/",
        "https://symfony.com/blog/cve-2019-18889-forbid-serializing-abstractadapter-and-tagawareadapter-instances",
        "https://symfony.com/blog/symfony-4-3-8-released",
        "https://github.com/symfony/symfony/releases/tag/v4.3.8",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UED22BOXTL2SSFMGYKA64ZFHGLLJG3EA/",
        "https://symfony.com/blog/cve-2019-18889-forbid-serializing-abstractadapter-and-tagawareadapter-instances",
        "https://symfony.com/blog/symfony-4-3-8-released"
    ]
}