Vulnerability in Pab1it0 Adx-Mcp-Server
CVE-2026-33980
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.
EPSS: 0.004 (32.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.
Affected products
- Pab1it0 Adx-mcp-server — versions <= 1.1.0
- Pab1it0 Azure_data_explorer_mcp_server
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-33980?
- CVE-2026-33980 is a high-severity vulnerability in Pab1it0 Adx-Mcp-Server, classified under Improper Neutralization of Special Elements in Data Query Logic. CVSS score: 8.3/10. Published 2026-03-27.
- How severe is CVE-2026-33980?
- High severity. CVSS v3 base score is 8.3 out of 10.
- Is CVE-2026-33980 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.