{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "v1.21.1-rc0"
              },
              {
                "fixed": "v1.36.0"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "043c542056e0868221f2c607ec6e6bb6ec2c8bed"
            },
            {
              "fixed": "b69dd4a2c5d1244e4c6e96517c21ccc9b4ea3567"
            },
            {
              "fixed": "bc099fcaff59fee9c8a8f8e07ffff5b3c5df2bb9"
            }
          ],
          "repo": "https://github.com/mysteriumnetwork/node",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "mitre",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31309.json"
  },
  "details": "Improper authorization in the /tequilapi/config/user endpoint of Mysterium Node from v1.21.1-rc0 before v1.36.0 allows an unauthenticated attacker to arbitrarily overwrite the node's configuration and achieve a full node takeover via a crafted POST request.",
  "id": "CVE-2026-31309",
  "modified": "2026-07-17T03:42:04.678443196Z",
  "published": "2026-07-08T00:00:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/mysteriumnetwork/node/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31309.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31309"
    },
    {
      "type": "FIX",
      "url": "https://github.com/mysteriumnetwork/node/commit/bc099fcaff59fee9c8a8f8e07ffff5b3c5df2bb9"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/sch8ill/CVE-2026-31309"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}