Vulnerability-Lookup

FKIE_CVE-2026-69197

Vulnerability from fkie_nvd - Published: 2026-09-17 16:17 - Updated: 2026-09-17 18:17

Severity

8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Summary

Umbraco is an ASP.NET CMS. Prior to 13.15.1, 17.5.3, and 18.0.2, the Content Delivery API applies member and Public Access checks to the directly requested node but not to referenced nodes serialized through Content Picker or Multi-Node Tree Picker properties, including pickers nested in Block List, Block Grid, or Rich Text Editor blocks. When DeliveryApi:PublicAccess is enabled, an anonymous caller can retrieve a protected node's name, route, and id through an unprotected referencing node and use ?expand to retrieve full property values. When the Delivery API is instead gated by the organization-wide API key, a key holder can still bypass per-node Public Access through the same expansion path. The same RequestContextOutputExpansionStrategyV2 and ElementOnlyOutputExpansionStrategy path also bypasses allowed or disallowed content-type alias restrictions for referenced content. Direct requests for the protected node still return 401, and no integrity or availability impact is established. This issue is fixed in versions 13.15.1, 17.5.3, and 18.0.2.

References

	URL	Tags
	security-advisories@github.com	https://github.com/umbraco/Umbraco-CMS/commit/26312a3f717a0f33bb3d7d28b14bef3592bdb0fe
	security-advisories@github.com	https://github.com/umbraco/Umbraco-CMS/commit/5360e2a9681ce2d0024be374e80339260bcc2511
	security-advisories@github.com	https://github.com/umbraco/Umbraco-CMS/commit/a9649da4e5a0786db7688bd6b5036a21df26b015
	security-advisories@github.com	https://github.com/umbraco/Umbraco-CMS/releases/tag/release-13.15.1
	security-advisories@github.com	https://github.com/umbraco/Umbraco-CMS/releases/tag/release-17.5.3
	security-advisories@github.com	https://github.com/umbraco/Umbraco-CMS/releases/tag/release-18.0.2
	security-advisories@github.com	https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-wr57-hqmp-fgvh

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Umbraco-CMS",
          "vendor": "umbraco",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 12.0.0, \u003c 13.15.1"
            },
            {
              "status": "affected",
              "version": "\u003e= 14.0.0-rc1, \u003c 17.5.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 18.0.0, \u003c 18.0.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Umbraco is an ASP.NET CMS. Prior to 13.15.1, 17.5.3, and 18.0.2, the Content Delivery API applies member and Public Access checks to the directly requested node but not to referenced nodes serialized through Content Picker or Multi-Node Tree Picker properties, including pickers nested in Block List, Block Grid, or Rich Text Editor blocks. When DeliveryApi:PublicAccess is enabled, an anonymous caller can retrieve a protected node\u0027s name, route, and id through an unprotected referencing node and use ?expand to retrieve full property values. When the Delivery API is instead gated by the organization-wide API key, a key holder can still bypass per-node Public Access through the same expansion path. The same RequestContextOutputExpansionStrategyV2 and ElementOnlyOutputExpansionStrategy path also bypasses allowed or disallowed content-type alias restrictions for referenced content. Direct requests for the protected node still return 401, and no integrity or availability impact is established. This issue is fixed in versions 13.15.1, 17.5.3, and 18.0.2."
    }
  ],
  "id": "CVE-2026-69197",
  "lastModified": "2026-09-17T18:17:05.090",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-69197",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-17T17:23:00.299716Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-17T16:17:41.010",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/umbraco/Umbraco-CMS/commit/26312a3f717a0f33bb3d7d28b14bef3592bdb0fe"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/umbraco/Umbraco-CMS/commit/5360e2a9681ce2d0024be374e80339260bcc2511"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/umbraco/Umbraco-CMS/commit/a9649da4e5a0786db7688bd6b5036a21df26b015"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/umbraco/Umbraco-CMS/releases/tag/release-13.15.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/umbraco/Umbraco-CMS/releases/tag/release-17.5.3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/umbraco/Umbraco-CMS/releases/tag/release-18.0.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-wr57-hqmp-fgvh"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        },
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

CVE-2026-69197 (GCVE-0-2026-69197)

Vulnerability from cvelistv5 – Published: 2026-09-17 15:44 – Updated: 2026-09-17 17:23

Title

Umbraco: Delivery API leaks protected (Public Access) content through Content Picker / Multi-Node Tree Picker expansion

Summary

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-17 17:23 UTC

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
CWE-862 - Missing Authorization

Assigner

GitHub_M mitre root

References

7 references

URL	Tags
https://github.com/umbraco/Umbraco-CMS/security/a…	x_refsource_CONFIRM
https://github.com/umbraco/Umbraco-CMS/commit/263…	x_refsource_MISC
https://github.com/umbraco/Umbraco-CMS/commit/536…	x_refsource_MISC
https://github.com/umbraco/Umbraco-CMS/commit/a96…	x_refsource_MISC
https://github.com/umbraco/Umbraco-CMS/releases/t…	x_refsource_MISC
https://github.com/umbraco/Umbraco-CMS/releases/t…	x_refsource_MISC
https://github.com/umbraco/Umbraco-CMS/releases/t…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
umbraco	Umbraco-CMS	Affected: >= 12.0.0, < 13.15.1 Affected: >= 14.0.0-rc1, < 17.5.3 Affected: >= 18.0.0, < 18.0.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-69197",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-17T17:23:00.299716Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-17T17:23:18.418Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Umbraco-CMS",
          "vendor": "umbraco",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 12.0.0, \u003c 13.15.1"
            },
            {
              "status": "affected",
              "version": "\u003e= 14.0.0-rc1, \u003c 17.5.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 18.0.0, \u003c 18.0.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Umbraco is an ASP.NET CMS. Prior to 13.15.1, 17.5.3, and 18.0.2, the Content Delivery API applies member and Public Access checks to the directly requested node but not to referenced nodes serialized through Content Picker or Multi-Node Tree Picker properties, including pickers nested in Block List, Block Grid, or Rich Text Editor blocks. When DeliveryApi:PublicAccess is enabled, an anonymous caller can retrieve a protected node\u0027s name, route, and id through an unprotected referencing node and use ?expand to retrieve full property values. When the Delivery API is instead gated by the organization-wide API key, a key holder can still bypass per-node Public Access through the same expansion path. The same RequestContextOutputExpansionStrategyV2 and ElementOnlyOutputExpansionStrategy path also bypasses allowed or disallowed content-type alias restrictions for referenced content. Direct requests for the protected node still return 401, and no integrity or availability impact is established. This issue is fixed in versions 13.15.1, 17.5.3, and 18.0.2."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862: Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T15:44:24.988Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-wr57-hqmp-fgvh",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-wr57-hqmp-fgvh"
        },
        {
          "name": "https://github.com/umbraco/Umbraco-CMS/commit/26312a3f717a0f33bb3d7d28b14bef3592bdb0fe",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/umbraco/Umbraco-CMS/commit/26312a3f717a0f33bb3d7d28b14bef3592bdb0fe"
        },
        {
          "name": "https://github.com/umbraco/Umbraco-CMS/commit/5360e2a9681ce2d0024be374e80339260bcc2511",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/umbraco/Umbraco-CMS/commit/5360e2a9681ce2d0024be374e80339260bcc2511"
        },
        {
          "name": "https://github.com/umbraco/Umbraco-CMS/commit/a9649da4e5a0786db7688bd6b5036a21df26b015",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/umbraco/Umbraco-CMS/commit/a9649da4e5a0786db7688bd6b5036a21df26b015"
        },
        {
          "name": "https://github.com/umbraco/Umbraco-CMS/releases/tag/release-13.15.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/umbraco/Umbraco-CMS/releases/tag/release-13.15.1"
        },
        {
          "name": "https://github.com/umbraco/Umbraco-CMS/releases/tag/release-17.5.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/umbraco/Umbraco-CMS/releases/tag/release-17.5.3"
        },
        {
          "name": "https://github.com/umbraco/Umbraco-CMS/releases/tag/release-18.0.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/umbraco/Umbraco-CMS/releases/tag/release-18.0.2"
        }
      ],
      "source": {
        "advisory": "GHSA-wr57-hqmp-fgvh",
        "discovery": "UNKNOWN"
      },
      "title": "Umbraco: Delivery API leaks protected (Public Access) content through Content Picker / Multi-Node Tree Picker expansion"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-69197",
    "datePublished": "2026-09-17T15:44:24.988Z",
    "dateReserved": "2026-08-03T16:00:23.483Z",
    "dateUpdated": "2026-09-17T17:23:18.418Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.