{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7f19b52280f414f57af2b79a95333d1c8fbeece5"
            }
          ],
          "repo": "https://github.com/work90210/apifold",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-x82h-9r8v-m672"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-306"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47769.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "7f19b52280f414f57af2b79a95333d1c8fbeece5"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "APIFold reads an OpenAPI 3.x or Swagger 2.x specification and generates a live, production-ready MCP server endpoint. Prior to commit 7f19b52280f414f57af2b79a95333d1c8fbeece5, the `/webhooks/:serverSlug/:eventName` endpoint accepts arbitrary unauthenticated JSON and stores it in Redis and the `webhook_events` PostgreSQL table without any signature check or authentication requirement. The root cause is that `createWebhookRouter` is called at `server.ts:188` without a `validators` map, so `receivers.ts:80`'s optional-chaining guard evaluates to `undefined` and the signature-validation block (`receiver.ts:81–95`) is unconditionally skipped. Any unauthenticated network client that knows a valid server slug can inject arbitrary payloads, which are subsequently served as trusted resource state to legitimate MCP clients. Commit 7f19b52280f414f57af2b79a95333d1c8fbeece5 patches the issue.",
  "id": "CVE-2026-47769",
  "modified": "2026-07-25T03:56:29.309674718Z",
  "published": "2026-07-23T17:23:27.570Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47769.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/Work90210/APIFold/security/advisories/GHSA-x82h-9r8v-m672"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47769"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Work90210/APIFold/commit/7f19b52280f414f57af2b79a95333d1c8fbeece5"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Work90210/APIFold/pull/235"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "APIFold Vulnerable to Unauthenticated Webhook Event Injection"
}