medium5.3
CVE-2026-73845
CKAN MCP Server: MQA server allowlist bypass via unanchored regex (`isValidMqaServer`)
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @aborruso/ckan-mcp-server | < 0.4.112 | 0.4.112 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-83x6-42hr-jc76
- https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-83x6-42hr-jc76
- https://nvd.nist.gov/vuln/detail/CVE-2026-73845
- https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151
- https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112