CVE-2026-61612Network attack vectorHinoki check available

Internal service access via unresolved DNS hostnames

Published Sep 21, 2026 · Updated Sep 21, 2026

SSRF in onData CKAN MCP Server before 0.4.108 allows remote authenticated users to access internal services via a crafted server_url. The validateServerUrl guard checks the supplied hostname string without resolving DNS, so a public name resolving internally passes validation. Exploitation requires low-privileged access and user interaction and can expose loopback services and cloud instance metadata.

CVSS severity5.7
Medium
EPSS probability0.23%
Next 30 days · Oct 20, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

SSRF in onData CKAN MCP Server before 0.4.108 allows remote authenticated users to access internal services via a crafted server_url. The validateServerUrl guard checks the supplied hostname string without resolving DNS, so a public name resolving internally passes validation. Exploitation requires low-privileged access and user interaction and can expose loopback services and cloud instance metadata.

The record

CVE
CVE-2026-61612
Published
Sep 21, 2026
Updated
Sep 21, 2026
Vendor
onData
Product
CKAN MCP Server
Classifications
CWE-918, T1552.005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=@aborruso/ckan-mcp-server

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

onData · CKAN MCP Serverversion=@aborruso/ckan-mcp-server

Published CVSS scores

5.7GitHub CNACVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1552.005Unsecured Credentials: Cloud Instance Metadata API

Public exploit references

No public exploit references are available in this record.

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Technologies

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