CVE-2026-73846

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 97% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
6.5
EG Score
6.5(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

August 14, 2026

Last Modified

September 18, 2026

Advisory Details (3)

Auto-updated Aug 14, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github, github_commit.
github_release Patch Available

v0.4.112 - Security hardening (SSRF, DoS, prompt-injection, cache, transport)

Patch available: ondata/ckan-mcp-server v0.4.112

https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112
github_commit Patch Available

commit 8e1522f9bbfa (ondata/ckan-mcp-server)

Patch available: ondata/ckan-mcp-server v0.4.112 (contains commit 8e1522f9bbfa)

https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151
github Patch Available🟡 PoC Available

Cache-key canonicalization collision enables cache confusion / poisoning · Advisory · ondata/ckan-mcp-server · GitHub

https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-78x9-fhhx-v2g6

Vendor Advisories for CVE-2026-73846(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
@aborruso/ckan-mcp-server—0.4.112—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 47× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-18 20:24 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 02:08 UTCEG score recompute
  4. 2026-09-16 23:49 UTCEG score recompute
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-16 05:15 UTCEPSS rescore
  7. 2026-09-15 19:29 UTCEG score recompute
  8. 2026-09-15 03:12 UTCEPSS rescore
  9. 2026-09-14 16:30 UTCEG score recompute
  10. 2026-09-13 14:05 UTCEG score recompute
  11. 2026-09-12 15:02 UTCEPSS rescore
  12. 2026-09-12 11:46 UTCEG score recompute
  13. 2026-09-11 14:53 UTCEPSS rescore
  14. 2026-09-11 09:27 UTCEG score recompute
  15. 2026-09-10 09:35 UTCEPSS rescore
  16. 2026-09-09 04:49 UTCEG score recompute
  17. 2026-09-08 22:01 UTCEPSS rescore
  18. 2026-09-07 16:25 UTCEG score recompute
  19. 2026-09-06 13:48 UTCEPSS rescore
  20. 2026-09-06 05:54 UTCEG score recompute
  21. 2026-09-05 03:36 UTCEG score recompute
  22. 2026-09-04 05:07 UTCEPSS rescore
  23. 2026-09-01 15:09 UTCEG score recompute
  24. 2026-09-01 13:54 UTCEPSS rescore
  25. 2026-09-01 04:40 UTCEPSS rescore
Show 37 more
  1. 2026-09-01 04:40 UTCEPSS rescore
  2. 2026-08-31 11:36 UTCEG score recompute
  3. 2026-08-30 19:18 UTCEPSS rescore
  4. 2026-08-30 19:17 UTCEPSS rescore
  5. 2026-08-30 09:13 UTCEG score recompute
  6. 2026-08-30 01:22 UTCEPSS rescore
  7. 2026-08-29 06:54 UTCEG score recompute
  8. 2026-08-28 21:42 UTCEPSS rescore
  9. 2026-08-27 19:30 UTCEG score recompute
  10. 2026-08-27 14:25 UTCEPSS rescore
  11. 2026-08-26 15:08 UTCEG score recompute
  12. 2026-08-26 14:47 UTCEPSS rescore
  13. 2026-08-25 13:49 UTCEPSS rescore
  14. 2026-08-25 12:43 UTCEG score recompute
  15. 2026-08-24 14:18 UTCEPSS rescore
  16. 2026-08-24 10:24 UTCEG score recompute
  17. 2026-08-23 08:05 UTCEG score recompute
  18. 2026-08-23 00:19 UTCEPSS rescore
  19. 2026-08-22 05:46 UTCEG score recompute
  20. 2026-08-21 23:49 UTCEPSS rescore
  21. 2026-08-21 03:27 UTCEG score recompute
  22. 2026-08-20 22:56 UTCEPSS rescore
  23. 2026-08-20 01:09 UTCEG score recompute
  24. 2026-08-19 17:04 UTCEPSS rescore
  25. 2026-08-18 22:49 UTCEG score recompute
  26. 2026-08-18 13:49 UTCEPSS rescore
  27. 2026-08-18 13:49 UTCEPSS rescore
  28. 2026-08-17 20:31 UTCEG score recompute
  29. 2026-08-17 19:40 UTCEG score recompute
  30. 2026-08-17 13:47 UTCEPSS rescore
  31. 2026-08-16 22:10 UTCEG score recompute
  32. 2026-08-16 14:56 UTCEPSS rescore
  33. 2026-08-16 14:56 UTCEPSS rescore
  34. 2026-08-16 02:15 UTCEPSS rescore
  35. 2026-08-14 17:33 UTCEG score recompute
  36. 2026-08-14 17:06 UTCEG score recompute
  37. 2026-08-14 17:05 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-73846?
CVE-2026-73846 is a medium vulnerability published on August 14, 2026. 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…
When was CVE-2026-73846 disclosed?
CVE-2026-73846 was first published in the National Vulnerability Database on August 14, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73846 actively exploited?
CVE-2026-73846 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 96.5% of all scored CVEs.
What is the CVSS score of CVE-2026-73846?
CVE-2026-73846 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-73846?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73846, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-73846

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