Security advisory

{
  "id": "651a76bcce5f2314e00b782d53f005f9fe4fec1cd64b3181feeb282c5e3e0f4f",
  "url": "https://osv.dev/vulnerability/CVE-2026-33590",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-33590",
    "summary": "Insecure default settings of Portainer CE grant regular (non-admin) users privileges that allow host filesystem access and host-level code execution. An authenticated non-administrative user with endpoint access can exploit these settings to read host files or obtain root equivalent access on the host.",
    "evidence": "osv:CVE-2026-33590",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-33590",
      "aliases": [
        "CVE-2026-33590"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/portainer/portainer",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3e2fdb1891e81a8e4c5c8beb60e45f07c8ecae52"
                },
                {
                  "fixed": "ac8fa7672e732b44b970c9eaf928eddd2c68796c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "3e2fdb1891e81a8e4c5c8beb60e45f07c8ecae52"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "ac8fa7672e732b44b970c9eaf928eddd2c68796c"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.23.0",
            "2.0.0",
            "1.20.0",
            "1.11.3",
            "internal-1.6.0",
            "internal-1.5.0",
            "internal-1.4.0",
            "internal-1.3.0",
            "internal-1.2.0",
            "v0.6.0",
            "v0.5"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33590.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.532142602Z",
      "provider": "osv",
      "references": [
        "https://github.com/portainer/portainer/commit/3e2fdb1891e81a8e4c5c8beb60e45f07c8ecae52",
        "https://github.com/portainer/portainer/commit/ac8fa7672e732b44b970c9eaf928eddd2c68796c",
        "https://intwave.com/blog/2026/02/26/improving-portainer-security.html"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2026-33590",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497486,
  "published_at": "2026-05-28T20:16:23.163+00:00"
}