CVE-2026-73846CWE-345CWE-436

CVE-2026-73846

Medium · published August 14, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
8.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00194 · 8.7th percentile
Weaknesses
CWE-345 · Insufficient Verification of Data Authenticity; CWE-436 · Interpretation Conflict
Published
2026-08-14T21:20Z
References (4)
https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151 · [email protected]https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112 · [email protected]https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-78x9-fhhx-v2g6 · [email protected]https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-78x9-fhhx-v2g6 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 14 AUG 16:56Z
    CKAN MCP Server: Cache-key canonicalization collision enables cache confusion / poisoning
    cvelistv5