{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "2.10.2-lts"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "6951bf3d126521a2ba959b2e3d623f2fe4d03bd6"
            }
          ],
          "repo": "https://github.com/1panel-dev/maxkb",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-x65c-w438-c58f"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77518.json"
  },
  "details": "MaxKB is an open-source AI assistant for enterprise. In 2.10.2-lts and earlier, a normal workspace user who knows another user's active MCP tool_id in the same workspace can retrieve the hidden tool through the tool-detail route because it does not apply the per-resource authorization used by the list route. The response includes Tool.code, which may contain MCP server configuration and headers, and an attacker who can create or edit an attacker-owned workflow can place the same foreign mcp_tool_id in a workflow mcp-node so workflow debug uses the owner's MCP configuration without verifying permission to use that tool. No fixed version is available as of this review.",
  "id": "CVE-2026-77518",
  "modified": "2026-09-24T03:30:34.479201356Z",
  "published": "2026-09-21T20:36:26.835Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-x65c-w438-c58f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77518.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77518"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "MaxKB: Known MCP tool IDs expose owner Tool.code and can be referenced by attacker workflows"
}