Hulumi: AccountFoundation reuse paths silently downgrade GuardDuty / Security Hub posture

{
  "id": "b4278e84afe099b3104d7438e7d0324c030c71cd772be63ace3fd703e5349603",
  "url": "https://osv.dev/vulnerability/CVE-2026-48037",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Hulumi: AccountFoundation reuse paths silently downgrade GuardDuty / Security Hub posture",
    "summary": "Hulumi is an open-source toolkit that ships secure-by-default cloud and platform infrastructure components for Pulumi. Prior to version 1.4.0, AccountFoundation reuse paths silently downgrade GuardDuty / Security Hub posture. This issue has been patched in version 1.4.0.",
    "evidence": "osv:CVE-2026-48037",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-48037",
      "aliases": [
        "CVE-2026-48037",
        "GHSA-cj8g-prcm-mfg5"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:H/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/kerberosmansour/hulumi",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "f5f95fd2626c0ce0f0100445e79e602ae05d1d4f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.4.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "f5f95fd2626c0ce0f0100445e79e602ae05d1d4f"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.4.0"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.4.0"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.3.2",
            "v1.3.1",
            "v1.3.0",
            "v1.2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48037.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:39.425906566Z",
      "provider": "osv",
      "references": [
        "https://github.com/kerberosmansour/hulumi/releases/tag/v1.4.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48037.json",
        "https://github.com/kerberosmansour/hulumi/security/advisories/GHSA-cj8g-prcm-mfg5",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-48037",
        "https://github.com/kerberosmansour/hulumi/pull/178"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-693"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48037.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-48037",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 506880,
  "published_at": "2026-07-24T18:44:23.652+00:00"
}