{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "heimdall",
          "vendor": "dadrus",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.17.14"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.14, Heimdall performs rule matching on the raw (non-normalized) request path, while downstream components may normalize dot-segments according to RFC 3986, Section 6.2.2.3. This discrepancy can result in heimdall authorizing a request for one path (e.g., /user/../admin, or URL-encoded variants such as /user/%2e%2e/admin or /user/%2e%2e%2fadmin. The latter would require the allow_encoded_slashes option to be set to on or no_decode.) while the downstream ultimately processes a different, normalized path (/admin). This issue has been patched in version 0.17.14."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-35",
              "description": "CWE-35: Path Traversal: \u0027.../...//\u0027",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-436",
              "description": "CWE-436: Interpretation Conflict",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-08T03:43:41.597Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/dadrus/heimdall/security/advisories/GHSA-3q34-rx83-r6mq",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/dadrus/heimdall/security/advisories/GHSA-3q34-rx83-r6mq"
        },
        {
          "name": "https://github.com/dadrus/heimdall/pull/3209",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/dadrus/heimdall/pull/3209"
        },
        {
          "name": "https://github.com/dadrus/heimdall/commit/b5dfa484b7a8c2ce6d8691c026f9da867719947a",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/dadrus/heimdall/commit/b5dfa484b7a8c2ce6d8691c026f9da867719947a"
        },
        {
          "name": "https://github.com/dadrus/heimdall/releases/tag/v0.17.14",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/dadrus/heimdall/releases/tag/v0.17.14"
        }
      ],
      "source": {
        "advisory": "GHSA-3q34-rx83-r6mq",
        "discovery": "UNKNOWN"
      },
      "title": "Heimdall: Authorization bypass via path normalization mismatch"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-42274",
    "datePublished": "2026-05-08T03:43:41.597Z",
    "dateReserved": "2026-04-26T11:53:27.707Z",
    "dateUpdated": "2026-05-08T03:43:41.597Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}