{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "233"
              },
              {
                "fixed": "257.12"
              },
              {
                "introduced": "258"
              },
              {
                "fixed": "258.6"
              },
              {
                "introduced": "259"
              },
              {
                "fixed": "259.4"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "d60c527009133a1ed3d69c14b8c837c790e78d10"
            },
            {
              "fixed": "97f0cb09e1dd861e9039eb2b189811e8232b492f"
            },
            {
              "introduced": "781d9d0789379d1ea1f2ecefb804d41e9c8b6c38"
            },
            {
              "fixed": "687eb73f1a0f442240d114f029c80b6db1a3af48"
            },
            {
              "introduced": "9ca433482f2281d71718718705ca8cd3bf562ad6"
            },
            {
              "fixed": "ca088a7f89030fced26ee8121c6b587a7e8856c7"
            }
          ],
          "repo": "https://github.com/systemd/systemd",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-9mj4-rrc3-gjcx"
  ],
  "database_specific": {
    "cna_assigner": "mitre",
    "cwe_ids": [
      "CWE-348"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40226.json"
  },
  "details": "In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.",
  "id": "CVE-2026-40226",
  "modified": "2026-07-08T05:38:41.773287487Z",
  "published": "2026-04-10T15:18:10.447Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40226.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/systemd/systemd/security/advisories/GHSA-9mj4-rrc3-gjcx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40226"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}