Azure Data Explorer MCP Server: KQL Injection in multiple tools allows MCP client to execute arbitrary Kusto queries

{
  "id": "3ad57eca3b4847168be236becd645c85034eaf6766e992e373aeced5c7f65510",
  "url": "https://osv.dev/vulnerability/CVE-2026-33980",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Azure Data Explorer MCP Server: KQL Injection in multiple tools allows MCP client to execute arbitrary Kusto queries",
    "summary": "Azure Data Explorer MCP Server is a Model Context Protocol (MCP) server that enables AI assistants to execute KQL queries and explore Azure Data Explorer (ADX/Kusto) databases through standardized interfaces. Versions up to and including 0.1.1 contain KQL (Kusto Query Language) injection vulnerabilities in three MCP tool handlers: `get_table_schema`, `sample_table_data`, and `get_table_details`. The `table_name` parameter is interpolated directly into KQL queries via f-strings without any validation or sanitization, allowing an attacker (or a prompt-injected AI agent) to execute arbitrary KQL queries against the Azure Data Explorer cluster. Commit 0abe0ee55279e111281076393e5e966335fffd30 patches the issue.",
    "evidence": "osv:CVE-2026-33980",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-33980",
      "aliases": [
        "CVE-2026-33980",
        "GHSA-vphc-468g-8rfp",
        "PYSEC-2026-2327"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/pab1it0/adx-mcp-server",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0abe0ee55279e111281076393e5e966335fffd30"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:pab1it0:azure_data_explorer_mcp_server:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.1.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "0abe0ee55279e111281076393e5e966335fffd30"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.1.0",
            "1.0.9",
            "1.0.8",
            "1.0.7",
            "1.0.6",
            "1.0.5",
            "v1.0.3",
            "1.0.4",
            "1.0.3",
            "1.0.1",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33980.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.099041321Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33980.json",
        "https://github.com/pab1it0/adx-mcp-server/security/advisories/GHSA-vphc-468g-8rfp",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-33980",
        "https://github.com/pab1it0/adx-mcp-server/commit/0abe0ee55279e111281076393e5e966335fffd30"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-943"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33980.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-33980",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 515940,
  "published_at": "2026-03-27T21:32:57.541+00:00"
}