CVE-2026-73844 | BDVDB-2026-359358 Detail

ondatackan-mcp-server

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.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact none. Attack vector: network.

Weaknesses#

CWE-209 Generation of Error Message Containing Sensitive Information
CWE-210 Self-generated Error Message Containing Sensitive Information

References#

Exploit#

No public exploit known

History#

Version 12026-08-14Record published in the CVE List.
Version 22026-08-18Most recent update recorded in the CVE List.

Published

Published: 2026-08-14
Last modified: 2026-08-18

Vendor information

Vendor: ondata
Product: ckan-mcp-server

All ondata vulnerabilities

Score

3.7 Low

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 29.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 0.4.112
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

3.7 Low

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity	None
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).