CVE-2026-73846
CKAN MCP Server: Cache-key canonicalization collision enables cache confusion / poisoning
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-345 CWE-436 |
| Vendor | ondata |
| Product | ckan-mcp-server |
| Published | Aug 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
None
Affected Versions
ondata / ckan-mcp-server
< 0.4.112