# CVE-2026-73844

## Summary

- **CVE ID:** CVE-2026-73844
- **Severity:** LOW
- **CVSS Score:** 3.7 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)
- **CWE:** CWE-209, CWE-210
- **Published:** Aug 14, 2026
- **Last Modified:** Aug 18, 2026

## 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 (< 0.4.112)

## References

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

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.22%
- **EPSS Percentile:** 12.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._