bestzip before 2.2.6 and 3.0.x before 3.0.2 Argument Injection via Missing Option Delimiter

{
  "id": "d8b075bd54eb63d027dbdd976b46d9388a01166c7097b4c8acc38d38b470b0c0",
  "url": "https://osv.dev/vulnerability/CVE-2026-80427",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "bestzip before 2.2.6 and 3.0.x before 3.0.2 Argument Injection via Missing Option Delimiter",
    "summary": "bestzip builds the argument list for the system zip utility without separating options from operands. The destination archive path and the caller-supplied source paths are passed to the child process with no -- delimiter between them, so any source entry beginning with a hyphen is interpreted by zip as an option rather than a file name. zip accepts -T to test the finished archive and -TT to name the command used to perform that test, so a source list containing those two entries and a command string causes zip to run that command through a shell once the archive has been written. An application that passes a file name or path it received from an untrusted source into the bestzip API therefore executes a command of the supplier's choosing. Versions 2.2.6 and 3.0.2 add the delimiter.",
    "evidence": "osv:CVE-2026-80427",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-80427",
      "aliases": [
        "CVE-2026-80427",
        "GHSA-p87m-9567-rgcc"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nfriedly/node-bestzip",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "4b301c1111f516f1f6ec7cde1879ed13f3da2244"
                },
                {
                  "introduced": "212d87b79ff02a55499b4038cfcdee97c9c6aaa2"
                },
                {
                  "fixed": "e1be686b835491033ae2de9069a9874107de11ab"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.2.6"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "3.0.0"
                      },
                      {
                        "fixed": "3.0.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.2.5",
            "v3.0.1",
            "v3.0.0",
            "v2.2.4",
            "v2.2.3",
            "v2.2.2",
            "v2.2.1",
            "v2.2.0",
            "v2.1.7",
            "v2.1.6",
            "v2.1.5",
            "v2.1.4",
            "v2.1.3",
            "v2.1.2",
            "v2.1.1",
            "v2.1.0",
            "v2.0.0",
            "v1.1.6",
            "v1.1.5",
            "v1.1.4",
            "v1.1.3",
            "v1.1.2",
            "v1.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80427.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.114042278Z",
      "provider": "osv",
      "references": [
        "https://www.npmjs.com/package/bestzip",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80427.json",
        "https://github.com/nfriedly/node-bestzip/security/advisories/GHSA-p87m-9567-rgcc",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-80427",
        "https://www.vulncheck.com/advisories/bestzip-before-2.2.6-and-3.0-x-before-3.0.2-argument-injection-via-missing-option-delimiter",
        "https://github.com/nfriedly/node-bestzip"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-88"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80427.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-80427",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491516,
  "published_at": "2026-08-26T15:44:55.22+00:00"
}