What is CVE-2026-73845?

CVE-2026-73845 is a medium-severity vulnerability in Ondata Ckan-Mcp-Server, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2026-08-14.

How severe is CVE-2026-73845?

Medium severity. CVSS v3 base score is 5.3 out of 10.

SSRF in Ondata Ckan-Mcp-Server

CVE-2026-73845

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Ondata Ckan-mcp-server — versions < 0.4.112

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-73845?: CVE-2026-73845 is a medium-severity vulnerability in Ondata Ckan-Mcp-Server, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2026-08-14.
How severe is CVE-2026-73845?: Medium severity. CVSS v3 base score is 5.3 out of 10.