{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "5.4.52"
              },
              {
                "introduced": "6.0.0-BETA1"
              },
              {
                "fixed": "6.4.40"
              },
              {
                "introduced": "7.0.0-BETA1"
              },
              {
                "fixed": "7.4.12"
              },
              {
                "introduced": "8.0.0-BETA1"
              },
              {
                "fixed": "8.0.12"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "eabc5f9ed7831fe6de8d609c5ebc29aed1f8ef8f"
            },
            {
              "introduced": "67778bf0d384584bc59bb618a91ef6b08e9153c6"
            },
            {
              "fixed": "95a951788e30c45356278f4e4472cbbf552d0eb9"
            },
            {
              "introduced": "ed57652df42aef294f411ef53dcfa5d6b7da2f90"
            },
            {
              "fixed": "275f5cbccbcc50205206f05e599c4f57009aadb8"
            },
            {
              "introduced": "eca48f1c4682ee0c55a2d320ca25d8292ed48f75"
            },
            {
              "fixed": "06d3b2c9a8aeb5d8493738cc51e24f6a1215827c"
            }
          ],
          "repo": "https://github.com/symfony/symfony",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-m7v2-7gxm-vc2v"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-502",
      "CWE-668"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45077.json"
  },
  "details": "Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, the server:log listener (Symfony\\Bridge\\Monolog\\Command\\ServerLogCommand) binds to 0.0.0.0:9911 by default and processes each received frame with unserialize(base64_decode($message)) without authentication, integrity checks, or an allowed_classes allowlist, allowing any reachable host to submit attacker-chosen serialized PHP payloads that can crash the listener and may trigger object-injection gadget effects. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.",
  "id": "CVE-2026-45077",
  "modified": "2026-07-15T01:49:01.236824869Z",
  "published": "2026-07-14T17:46:33.837Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45077.json"
    },
    {
      "type": "FIX",
      "url": "https://github.com/symfony/symfony/commit/0891b2f293896c488e26943dc034334364b77fc4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/symfony/releases/tag/v5.4.52"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/symfony/releases/tag/v6.4.40"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/symfony/releases/tag/v7.4.12"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/symfony/releases/tag/v8.0.12"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/symfony/symfony/security/advisories/GHSA-m7v2-7gxm-vc2v"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45077"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Symfony: Unauthenticated PHP Object Deserialization in MonologBridge server:log Listener"
}