CVE-2026-73845

CKAN MCP Server: MQA server allowlist bypass via unanchored regex (`isValidMqaServer`)

Published Aug 14, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, the ckan_get_mqa_quality and ckan_get_mqa_quality_details tools in src/tools/quality.ts use isValidMqaServer to validate the server_url parameter with a prefix-only regular expression for dati.gov.it, allowing suffix-host and URL-userinfo values to target an attacker-controlled host and return a spoofed response. This issue is fixed in version 0.4.112.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-83x6-42hr-jc76 CKAN MCP Server: MQA server allowlist bypass via unanchored regex (`isValidMqaServer`)
History
Type Values Removed Values Added
First Time appeared Ondata
Ondata ckan-mcp-server
Vendors & Products Ondata
Ondata ckan-mcp-server
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, the ckan_get_mqa_quality and ckan_get_mqa_quality_details tools in src/tools/quality.ts use isValidMqaServer to validate the server_url parameter with a prefix-only regular expression for dati.gov.it, allowing suffix-host and URL-userinfo values to target an attacker-controlled host and return a spoofed response. This issue is fixed in version 0.4.112.
Title CKAN MCP Server: MQA server allowlist bypass via unanchored regex (`isValidMqaServer`)
Weaknesses CWE-20
CWE-625
CWE-918
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Aug 14, 2026, 6:06 PM
Reserved
Aug 13, 2026, 5:44 PM
Status
Deferred
Published
Aug 14, 2026, 5:20 PM
Modified
Sep 18, 2026, 8:09 PM