CVE-2026-73845: CWE-20: Improper Input Validation in ondata ckan-mcp-server
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.
AI Analysis
Technical Summary
The vulnerability in ondata ckan-mcp-server affects the ckan_get_mqa_quality and ckan_get_mqa_quality_details tools in src/tools/quality.ts. These tools use the isValidMqaServer function to validate the server_url parameter with a prefix-only regex for dati.gov.it. This validation is insufficient, permitting suffix-host and URL-userinfo values that can redirect requests to attacker-controlled hosts, resulting in spoofed responses. The flaw is addressed in version 0.4.112.
Potential Impact
An attacker can exploit this improper input validation to cause the affected tools to interact with attacker-controlled hosts, potentially leading to spoofed responses. The confidentiality impact is low, with no integrity or availability impact reported. The CVSS score is 5.3 (medium severity).
Mitigation Recommendations
Upgrade to version 0.4.112 or later, where the issue is fixed. No other mitigation or temporary workaround is indicated.
CVE-2026-73845: CWE-20: Improper Input Validation in ondata ckan-mcp-server
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.
CVSS v3.1
Score 5.3medium
Affected software
pkg:github/ondata/ckan-mcp-serverRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in ondata ckan-mcp-server affects the ckan_get_mqa_quality and ckan_get_mqa_quality_details tools in src/tools/quality.ts. These tools use the isValidMqaServer function to validate the server_url parameter with a prefix-only regex for dati.gov.it. This validation is insufficient, permitting suffix-host and URL-userinfo values that can redirect requests to attacker-controlled hosts, resulting in spoofed responses. The flaw is addressed in version 0.4.112.
Potential Impact
An attacker can exploit this improper input validation to cause the affected tools to interact with attacker-controlled hosts, potentially leading to spoofed responses. The confidentiality impact is low, with no integrity or availability impact reported. The CVSS score is 5.3 (medium severity).
Mitigation Recommendations
Upgrade to version 0.4.112 or later, where the issue is fixed. No other mitigation or temporary workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-08-13T17:44:28.643Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7f4ccfbf8831d53972219d
Added to database: 08/14/2026, 17:13:51 UTC
Last enriched: 08/14/2026, 17:30:57 UTC
Last updated: 08/14/2026, 18:12:08 UTC
Views: 4
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