CVE-2026-73845

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (30th percentile of EPSS-scored CVEs). 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
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100CISA SSVC

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
Severity53% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
30th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

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, github_commit, github_release.
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
githubMentions a patch (unverified)🟡 PoC Available

MQA server allowlist bypass via unanchored regex (`isValidMqaServer`) · Advisory · ondata/ckan-mcp-server · GitHub

https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-83x6-42hr-jc76

Vendor Advisories for CVE-2026-73845(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 rangeFix by version rangeDependents
@aborruso/ckan-mcp-server—
  • every version up to 0.4.112: fixed in 0.4.112
—

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 43× 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. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:13 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-06 15:18 UTCEPSS rescore
  5. 2026-10-06 09:22 UTCEG score recompute
  6. 2026-10-05 17:43 UTCEPSS rescore
  7. 2026-10-04 23:22 UTCEPSS rescore
  8. 2026-10-03 19:41 UTCEG score recompute
  9. 2026-10-03 14:26 UTCEPSS rescore
  10. 2026-10-02 07:20 UTCEG score recompute
  11. 2026-10-01 19:50 UTCEPSS rescore
  12. 2026-09-30 21:40 UTCEG score recompute
  13. 2026-09-29 15:24 UTCEPSS rescore
  14. 2026-09-28 10:16 UTCEG score recompute
  15. 2026-09-27 13:48 UTCEPSS rescore
  16. 2026-09-27 09:37 UTCEG score recompute
  17. 2026-09-26 15:59 UTCEPSS rescore
  18. 2026-09-26 00:28 UTCEPSS rescore
  19. 2026-09-25 03:23 UTCEG score recompute
  20. 2026-09-23 23:32 UTCEG score recompute
  21. 2026-09-23 17:54 UTCEPSS rescore
  22. 2026-09-22 22:59 UTCEG score recompute
  23. 2026-09-21 22:26 UTCEG score recompute
  24. 2026-09-21 21:09 UTCEPSS rescore
  25. 2026-09-20 21:50 UTCEG score recompute
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  1. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-19 21:15 UTCEG score recompute
  3. 2026-09-18 20:24 UTCEG score recompute
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 12:48 UTCEG score recompute
  6. 2026-09-17 11:58 UTCEG score recompute
  7. 2026-09-16 14:08 UTCEPSS rescore
  8. 2026-09-16 10:27 UTCEG score recompute
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-15 08:12 UTCEG score recompute
  11. 2026-09-15 03:12 UTCEPSS rescore
  12. 2026-09-14 07:38 UTCEG score recompute
  13. 2026-09-13 07:05 UTCEG score recompute
  14. 2026-09-12 15:02 UTCEPSS rescore
  15. 2026-09-12 06:32 UTCEG score recompute
  16. 2026-09-11 14:53 UTCEPSS rescore
  17. 2026-09-11 05:57 UTCEG score recompute
  18. 2026-09-10 09:35 UTCEPSS rescore
  19. 2026-09-09 04:49 UTCEG score recompute
  20. 2026-09-08 22:01 UTCEPSS rescore
  21. 2026-09-07 16:25 UTCEG score recompute
  22. 2026-09-06 15:51 UTCEG score recompute
  23. 2026-09-06 13:48 UTCEPSS rescore
  24. 2026-09-04 14:35 UTCEG score recompute
  25. 2026-09-04 05:07 UTCEPSS rescore
  26. 2026-09-03 14:02 UTCEG score recompute
  27. 2026-09-02 14:12 UTCEPSS rescore
  28. 2026-09-02 12:24 UTCEG score recompute
  29. 2026-09-01 13:54 UTCEPSS rescore
  30. 2026-09-01 11:13 UTCEG score recompute
  31. 2026-09-01 04:40 UTCEPSS rescore
  32. 2026-09-01 04:40 UTCEPSS rescore
  33. 2026-08-31 08:04 UTCEG score recompute
  34. 2026-08-30 19:18 UTCEPSS rescore
  35. 2026-08-30 19:17 UTCEPSS rescore
  36. 2026-08-30 07:28 UTCEG score recompute
  37. 2026-08-30 01:22 UTCEPSS rescore
  38. 2026-08-29 06:55 UTCEG score recompute
  39. 2026-08-28 21:42 UTCEPSS rescore
  40. 2026-08-28 01:49 UTCEG score recompute
  41. 2026-08-27 14:25 UTCEPSS rescore
  42. 2026-08-27 01:16 UTCEG score recompute
  43. 2026-08-26 14:47 UTCEPSS rescore
  44. 2026-08-26 00:43 UTCEG score recompute
  45. 2026-08-25 13:49 UTCEPSS rescore
  46. 2026-08-25 00:09 UTCEG score recompute
  47. 2026-08-24 14:18 UTCEPSS rescore
  48. 2026-08-23 23:36 UTCEG score recompute
  49. 2026-08-23 00:19 UTCEPSS rescore
  50. 2026-08-22 23:03 UTCEG score recompute
  51. 2026-08-21 23:49 UTCEPSS rescore
  52. 2026-08-21 22:30 UTCEG score recompute
  53. 2026-08-20 22:56 UTCEPSS rescore
  54. 2026-08-19 21:23 UTCEG score recompute
  55. 2026-08-19 17:04 UTCEPSS rescore
  56. 2026-08-18 20:47 UTCEG score recompute
  57. 2026-08-18 13:49 UTCEPSS rescore
  58. 2026-08-18 13:49 UTCEPSS rescore
  59. 2026-08-17 20:14 UTCEG score recompute
  60. 2026-08-17 13:47 UTCEPSS rescore
  61. 2026-08-16 19:41 UTCEG score recompute
  62. 2026-08-16 14:56 UTCEPSS rescore
  63. 2026-08-16 14:56 UTCEPSS rescore
  64. 2026-08-16 02:15 UTCEPSS rescore
  65. 2026-08-14 17:33 UTCEG score recompute
  66. 2026-08-14 17:06 UTCEG score recompute
  67. 2026-08-14 17:05 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-73845?
CVE-2026-73845 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, the ckangetmqaquality and ckangetmqaqualitydetails tools in src/tools/quality.ts use isValidMqaServer to validate the serverurl parameter with a prefix-only regular expression for dati.gov.it, allowing suffix-host and…
When was CVE-2026-73845 disclosed?
CVE-2026-73845 was first published 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-2026-73845 actively exploited?
CVE-2026-73845 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (30th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73845?
CVE-2026-73845 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73845?
A fix for CVE-2026-73845 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-73845 are linked in the Vendor Advisories panel on this page.

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