Vulnerability · Published Aug 14, 2026 · Assigned by GitHub_M
CVE-2026-73844CKAN MCP Server: Information disclosure via verbose error reflection
Low 3.7
In plain English
A low-severity security flaw in ckan-mcp-server from ondata. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, error paths reflect raw upstream response bodies and internal exception messages back to the caller instead of a sanitized, generic message. When the server is pointed at (or redirected/SSRF'd to) a host that returns a non-CKAN response, or when an internal exception occurs, the caller receives verbatim upstream content and internal detail (hostnames, internal IPs, DB errors, stack fragments). This vulnerability is fixed in 0.4.112.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @aborruso/ckan-mcp-server | 0.4.112 | GHSA-6f9w-9hf2-5rg3 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ondata | ckan-mcp-server | < 0.4.112 |
Weakness: CWE-209, CWE-210 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N