What is CVE-2026-73846?

CVE-2026-73846 is a medium-severity vulnerability in Ondata Ckan-Mcp-Server, classified under Insufficient Verification of Data Authenticity. CVSS score: 6.5/10. Published 2026-08-14.

How severe is CVE-2026-73846?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Ondata Ckan-Mcp-Server

CVE-2026-73846

CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, canonicalizeParams in src/utils/cache.ts serializes request parameters with unescaped ampersand, equals-sign, and vertical-bar delimiters, allowing different logical parameter sets used by buildCacheKey to collide and an attacker to prime a shared cache with a response for a victim's distinct query. This issue is fixed in version 0.4.112.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/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-2026-73846?: CVE-2026-73846 is a medium-severity vulnerability in Ondata Ckan-Mcp-Server, classified under Insufficient Verification of Data Authenticity. CVSS score: 6.5/10. Published 2026-08-14.
How severe is CVE-2026-73846?: Medium severity. CVSS v3 base score is 6.5 out of 10.