CVE-2026-73845 (GCVE-0-2026-73845)
Vulnerability from cvelistv5
Published
2026-08-14 16:45
Modified
2026-08-14 18:06
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-20 - Improper Input Validation
  • CWE-625 - Permissive Regular Expression
  • CWE-918 - Server-Side Request Forgery (SSRF)
Summary
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.
References
Impacted products
Vendor Product Version
ondata ckan-mcp-server Version: < 0.4.112
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-73845",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-14T17:41:38.966873Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-14T18:06:04.170Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "ckan-mcp-server",
          "vendor": "ondata",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.4.112"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-625",
              "description": "CWE-625: Permissive Regular Expression",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-918",
              "description": "CWE-918: Server-Side Request Forgery (SSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-14T16:45:06.714Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-83x6-42hr-jc76",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-83x6-42hr-jc76"
        },
        {
          "name": "https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151"
        },
        {
          "name": "https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112"
        }
      ],
      "source": {
        "advisory": "GHSA-83x6-42hr-jc76",
        "discovery": "UNKNOWN"
      },
      "title": "CKAN MCP Server: MQA server allowlist bypass via unanchored regex (`isValidMqaServer`)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-73845",
    "datePublished": "2026-08-14T16:45:06.714Z",
    "dateReserved": "2026-08-13T17:44:28.643Z",
    "dateUpdated": "2026-08-14T18:06:04.170Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"cna\": {\"title\": \"CKAN MCP Server: MQA server allowlist bypass via unanchored regex (`isValidMqaServer`)\", \"problemTypes\": [{\"descriptions\": [{\"cweId\": \"CWE-20\", \"lang\": \"en\", \"description\": \"CWE-20: Improper Input Validation\", \"type\": \"CWE\"}]}, {\"descriptions\": [{\"cweId\": \"CWE-625\", \"lang\": \"en\", \"description\": \"CWE-625: Permissive Regular Expression\", \"type\": \"CWE\"}]}, {\"descriptions\": [{\"cweId\": \"CWE-918\", \"lang\": \"en\", \"description\": \"CWE-918: Server-Side Request Forgery (SSRF)\", \"type\": \"CWE\"}]}], \"metrics\": [{\"cvssV3_1\": {\"attackComplexity\": \"LOW\", \"attackVector\": \"NETWORK\", \"availabilityImpact\": \"NONE\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"scope\": \"UNCHANGED\", \"userInteraction\": \"NONE\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\", \"version\": \"3.1\"}}], \"references\": [{\"name\": \"https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-83x6-42hr-jc76\", \"tags\": [\"x_refsource_CONFIRM\"], \"url\": \"https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-83x6-42hr-jc76\"}, {\"name\": \"https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151\", \"tags\": [\"x_refsource_MISC\"], \"url\": \"https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151\"}, {\"name\": \"https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112\", \"tags\": [\"x_refsource_MISC\"], \"url\": \"https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112\"}], \"affected\": [{\"vendor\": \"ondata\", \"product\": \"ckan-mcp-server\", \"versions\": [{\"version\": \"\u003c 0.4.112\", \"status\": \"affected\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-08-14T16:45:06.714Z\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"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.\"}], \"source\": {\"advisory\": \"GHSA-83x6-42hr-jc76\", \"discovery\": \"UNKNOWN\"}}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-73845\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-14T17:41:38.966873Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-14T17:41:40.075Z\"}}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-73845\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"GitHub_M\", \"dateReserved\": \"2026-08-13T17:44:28.643Z\", \"datePublished\": \"2026-08-14T16:45:06.714Z\", \"dateUpdated\": \"2026-08-14T18:06:04.170Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.