goshs is Missing Write Protection for Parametric Data Values

{
  "id": "ca9f358207c5ec983d990e18739d030e3259dacae4c346ab9f1f413e3cff5238",
  "url": "https://osv.dev/vulnerability/CVE-2026-40188",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "goshs is Missing Write Protection for Parametric Data Values",
    "summary": "goshs is a SimpleHTTPServer written in Go. From 1.0.7 to before 2.0.0-beta.4, the SFTP command rename sanitizes only the source path and not the destination, so it is possible to write outside of the root directory of the SFTP. This vulnerability is fixed in 2.0.0-beta.4.",
    "evidence": "osv:CVE-2026-40188",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-40188",
      "aliases": [
        "CVE-2026-40188",
        "GHSA-2943-crp8-38xx",
        "GO-2026-4953"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/goshs-labs/goshs",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a24cf77e24a797737603e0f76d502317ff6b3e06"
                },
                {
                  "fixed": "0c316e71c6eb69d75218c4af6e9793cc07cdfaab"
                },
                {
                  "fixed": "141c188ce270ffbec087844a50e5e695b7da7744"
                },
                {
                  "fixed": "10f291dea17fb795f0008ed64c3ad7ab8c0470de"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:goshs:goshs:*:*:*:*:*:go:*:*",
                    "range": [
                      {
                        "introduced": "1.0.7"
                      },
                      {
                        "fixed": "2.0.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "141c188ce270ffbec087844a50e5e695b7da7744"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "10f291dea17fb795f0008ed64c3ad7ab8c0470de"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v2.0.0-beta.4"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.1.4",
            "v2.0.0-beta.3",
            "v2.0.0-beta.2",
            "v2.0.0-beta.1",
            "1.1.3",
            "v1.1.2",
            "v1.1.1",
            "v1.1.0",
            "v1.0.9",
            "v1.0.8",
            "v1.0.7"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40188.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:35.907837269Z",
      "provider": "osv",
      "references": [
        "https://github.com/patrickhener/goshs/releases/tag/v2.0.0-beta.4",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40188.json",
        "https://github.com/patrickhener/goshs/security/advisories/GHSA-2943-crp8-38xx",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-40188",
        "https://github.com/patrickhener/goshs/commit/141c188ce270ffbec087844a50e5e695b7da7744"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-1314"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40188.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-40188",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 503244,
  "published_at": "2026-04-10T19:43:45.197+00:00"
}