Arcane has a Command Injection in Arcane Updater Lifecycle Labels Enables RCE

{
  "id": "44993f6aa7cf719749382b6d1ac0cde179e9b551e81f428ccdd8cb82c6d5f04e",
  "url": "https://osv.dev/vulnerability/CVE-2026-23520",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Arcane has a Command Injection in Arcane Updater Lifecycle Labels Enables RCE",
    "summary": "Arcane provides modern docker management. Prior to 1.13.0, Arcane has a command injection in the updater service. Arcane’s updater service supported lifecycle labels com.getarcaneapp.arcane.lifecycle.pre-update and com.getarcaneapp.arcane.lifecycle.post-update that allowed defining a command to run before or after a container update. The label value is passed directly to /bin/sh -c without sanitization or validation. Because any authenticated user (not limited to administrators) can create projects through the API, an attacker can create a project that specifies one of these lifecycle labels with a malicious command. When an administrator later triggers a container update (either manually or via scheduled update checks), Arcane reads the lifecycle label and executes its value as a shell command inside the container. This vulnerability is fixed in 1.13.0.",
    "evidence": "osv:CVE-2026-23520",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-23520",
      "aliases": [
        "CVE-2026-23520",
        "GHSA-gjqq-6r35-w3r8",
        "GO-2026-4320"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/getarcaneapp/arcane",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2e32ef4443676edcceb26c8e41f637974f0041c8"
                },
                {
                  "fixed": "5a9c2f92e11f86f8997da8c672844468f930b7e4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:arcane:arcane:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.13.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "5a9c2f92e11f86f8997da8c672844468f930b7e4"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "2e32ef4443676edcceb26c8e41f637974f0041c8"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.13.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.12.2",
            "v1.12.1",
            "v1.12.0",
            "v1.11.3",
            "v1.11.2",
            "v1.11.1",
            "v1.11.0",
            "v1.10.1",
            "v1.10.0",
            "v1.9.0",
            "v1.8.1",
            "v1.8.0",
            "v1.7.1",
            "v1.7.0",
            "v1.6.0",
            "v1.5.2",
            "v1.5.1",
            "v1.5.0",
            "v1.4.0",
            "v1.3.0",
            "v1.2.2",
            "v1.2.1",
            "v1.2.0",
            "v1.1.0",
            "v1.0.2",
            "v1.0.1",
            "v1.0.0",
            "v0.15.1",
            "v0.15.0",
            "v0.14.0",
            "v0.13.1",
            "v0.13.0",
            "v0.12.0",
            "v0.11.1",
            "v0.11.0",
            "v0.10.0",
            "v0.9.2",
            "v0.9.1",
            "v0.9.0",
            "v0.8.0",
            "v0.7.1",
            "v0.7.0",
            "v0.6.0",
            "v0.5.0",
            "v0.4.1",
            "v0.4.0",
            "v0.3.0",
            "v0.2.0",
            "v0.1.1",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23520.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:36.998741865Z",
      "provider": "osv",
      "references": [
        "https://github.com/getarcaneapp/arcane/releases/tag/v1.13.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23520.json",
        "https://github.com/getarcaneapp/arcane/security/advisories/GHSA-gjqq-6r35-w3r8",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-23520",
        "https://github.com/getarcaneapp/arcane/commit/5a9c2f92e11f86f8997da8c672844468f930b7e4",
        "https://github.com/getarcaneapp/arcane/pull/1468"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-78"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23520.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-23520",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504143,
  "published_at": "2026-01-15T19:20:22.434+00:00"
}