What’s Vulnerable › Vulnerabilities

CVE-2026-73844: CKAN MCP Server: Information disclosure via verbose error reflection

• Severity: low (CVSS 3.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-14 · updated 2026-09-18
• Weakness: CWE-209

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 products

• ondata ckan-mcp-server: before 0.4.112

References

• https://github.com/ondata/ckan-mcp-server/commit/3b827af72b228d42aa7b0d7dac5347d16af3f4e5
• https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112
• https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-6f9w-9hf2-5rg3

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