Medium 5.3Published Aug 14, 2026

CVE-2026-73845CKAN MCP Server: MQA server allowlist bypass via unanchored regex (`isValidMqaServer`)

Updated under an hour ago (2026-10-19 07:00 UTC)

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It affects ondata ckan-mcp-server. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for ondata ckan-mcp-server

Exploited in the last 30 days

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: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE): CWE-20, CWE-625, CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Aug 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

ondata ckan-mcp-server ondata:ckan_mcp_server (from the name)	before 0.4.112	CNA record

References

https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-83x6-42hr-jc76x-refsource-confirm
https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151x-refsource-misc
https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.