{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.11.1"
              },
              {
                "last_affected": "2.11.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "68b863c6b9fe38aea5ab7e1375100014c17389ab"
            },
            {
              "fixed": "68ca3a3a26c73c38a700453d3d021b5bbdc15dbd"
            }
          ],
          "repo": "https://github.com/tailcallhq/forgecode",
          "type": "GIT"
        }
      ],
      "versions": [
        "2.11.1"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-829"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57860.json"
  },
  "details": "ForgeCode (tailcallhq/forgecode), an AI pair-programming CLI, automatically loads and executes the MCP servers defined in a repository's .mcp.json file on startup without user confirmation. A malicious repository can supply a crafted .mcp.json whose mcpServers entries specify arbitrary command and args values (for example, command: bash with args: ['-c', 'touch /tmp/pwned']). When a user runs the forge CLI inside a cloned untrusted repository, the specified commands are spawned with the invoking user's privileges, resulting in arbitrary code execution. This provides a reliable initial-access and persistence primitive against developers who evaluate untrusted repositories with ForgeCode.",
  "id": "CVE-2026-57860",
  "modified": "2026-08-12T03:51:31.252214349Z",
  "published": "2026-07-17T16:16:09.573Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57860.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57860"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/forgecode-arbitrary-code-execution-via-unvetted-mcp-json-in-untrusted-repository"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/tailcallhq/forgecode/issues/3022"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/tailcallhq/forgecode/issues/3252"
    },
    {
      "type": "FIX",
      "url": "https://github.com/tailcallhq/forgecode/commit/68ca3a3a26c73c38a700453d3d021b5bbdc15dbd"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/tailcallhq/forgecode"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "ForgeCode Arbitrary Code Execution via Unvetted .mcp.json in Untrusted Repository"
}