sigmade Git-MCP-Server gitUtils.ts child_process.exec os command injection

{
  "id": "171bdff403711212aa403a62a45b838cdfac18518cd0aee1eaca5fac0f1f586f",
  "url": "https://osv.dev/vulnerability/CVE-2026-4496",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "sigmade Git-MCP-Server gitUtils.ts child_process.exec os command injection",
    "summary": "A vulnerability was found in sigmade Git-MCP-Server up to 785aa159f262a02d5791a5d8a8e13c507ac42880. Affected by this vulnerability is the function child_process.exec of the file src/gitUtils.ts of the component show_merge_diff/quick_merge_summary/show_file_diff. The manipulation results in os command injection. The attack must be initiated from a local position. The exploit has been made public and could be used. This product operates on a rolling release basis, ensuring continuous delivery. Consequently, there are no version details for either affected or updated releases. It is advisable to implement a patch to correct this issue. The vendor was contacted early about this disclosure but did not respond in any way.",
    "evidence": "osv:CVE-2026-4496",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-4496",
      "aliases": [
        "CVE-2026-4496"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/sigmade/git-mcp-server",
              "type": "GIT",
              "events": [
                {
                  "introduced": "785aa159f262a02d5791a5d8a8e13c507ac42880"
                },
                {
                  "last_affected": "785aa159f262a02d5791a5d8a8e13c507ac42880"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "785aa159f262a02d5791a5d8a8e13c507ac42880"
                      },
                      {
                        "last_affected": "785aa159f262a02d5791a5d8a8e13c507ac42880"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  }
                ]
              }
            }
          ],
          "versions": [
            "785aa159f262a02d5791a5d8a8e13c507ac42880"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-4496.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:40.245921085Z",
      "provider": "osv",
      "references": [
        "https://github.com/sigmade/Git-MCP-Server/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4496.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-4496",
        "https://vuldb.com/?id.352045",
        "https://vuldb.com/?submit.773796",
        "https://github.com/sigmade/Git-MCP-Server/issues/1",
        "https://vuldb.com/?ctiid.352045",
        "https://github.com/sigmade/Git-MCP-Server/pull/2",
        "https://github.com/user-attachments/files/24855745/Git-MCP-Server.bug.pdf"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-77",
          "CWE-78"
        ],
        "cna_assigner": "VulDB",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4496.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-4496",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 507586,
  "published_at": "2026-03-20T18:32:13.041+00:00"
}