Edgeless Systems Contrast 1.8.0 before 1.24.1 World-Writable Containerd Config Privilege Escalation

{
  "id": "0d4dfad0f51e92746211b57c0ee73224c19d6d0caf546409882ce077016ea334",
  "url": "https://osv.dev/vulnerability/CVE-2026-109358",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Edgeless Systems Contrast 1.8.0 before 1.24.1 World-Writable Containerd Config Privilege Escalation",
    "summary": "Edgeless Systems Contrast 1.8.0 before 1.24.1 contains an incorrect permissions vulnerability where the node installer writes the containerd config world-writable (0666). Local unprivileged users on the node can modify the containerd config, for example overwriting the runc location, to escalate privileges.",
    "evidence": "osv:CVE-2026-109358",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-109358",
      "aliases": [
        "CVE-2026-109358",
        "GHSA-376m-h37w-4rvq"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/edgelesssys/contrast",
              "type": "GIT",
              "events": [
                {
                  "introduced": "2c24641985716f83f6a228f57fbe92e8538fa2dd"
                },
                {
                  "fixed": "2a27ac7638b085e00b4061711367e9f9146cea7b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.8.0"
                      },
                      {
                        "fixed": "1.24.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "1.8.0"
                      },
                      {
                        "fixed": "1.24.1"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109358.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:24.933557500Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109358.json",
        "https://github.com/edgelesssys/contrast/security/advisories/GHSA-376m-h37w-4rvq",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-109358",
        "https://www.vulncheck.com/advisories/edgeless-systems-contrast-1.8.0-before-1.24.1-world-writable-containerd-config-privilege-escalation"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-732"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109358.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-109358",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491621,
  "published_at": "2026-10-12T16:05:38.236+00:00"
}