CVE-2026-33980 json
Azure Data Explorer MCP Server: KQL Injection in multiple tools allows MCP client to execute arbitrary Kusto queries
published 2026-03-27 7 mo ago modified 2026-10-26 13 d ago also GHSA-vphc-468g-8rfp , PYSEC-2026-2327 , EUVD-2026-16878
- cvss
- 8.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 34%
- public exploits
- 0
- none known
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.
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 7 mo ago
Exploit prediction
0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/pab1it0/adx-mcp-server/security/advisories/GHSA-vphc-468g-8rfp referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L |
| NVD | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
| GitHub | 3.1 | 8.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L |
| OSV | 3.1 | 8.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | adx-mcp-server | <=1.1.0 |
no fix listed |
Affected products
- pab1it0 adx-mcp-server
Classification
- Weakness
-
- CWE-943 Improper Neutralization of Special Elements in Data Query Logic
References
-
github.com
/pab1it0/adx-mcp-server/commit/0abe0ee55279e111281076393e5e966335fffd30
web, patch
-
github.com
/pab1it0/adx-mcp-server/security/advisories/GHSA-vphc-468g-8rfp
exploit, web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-33980
advisory
-
github.com
/pab1it0/adx-mcp-server
package
-
pypi.org
/project/adx-mcp-server
package
-
github.com
/advisories/GHSA-vphc-468g-8rfp
advisory
Sources
- CVE List CVE-2026-33980
- GitHub Advisory GHSA-vphc-468g-8rfp
- NVD CVE-2026-33980
- OSV PYSEC-2026-2327
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.