{"id":"CVE-2026-87670","title":"An authorization logic vulnerability exists in the Brocade Fabric OS versions before 10.0.1 REST API gateway","summary":"An authorization logic vulnerability exists in the Brocade Fabric OS versions before 10.0.1 REST API gateway. The internal gate guarding restricted management endpoints relies exclusively on client-controlled HTTP headers. An authenticat…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-290"],"vendor":"broadcom","product":"fabric_operating_system","affected":["fabric_operating_system < 10.0.1"],"patched":["fabric_operating_system 10.0.1"],"published":"2026-10-08","updated":"2026-10-13","sourceUpdated":"2026-10-13T17:16:45.870","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-87670","references":[{"url":"https://support.broadcom.com/external/content/SecurityAdvisories/0/39140","label":"sirt@brocade.com"}],"tags":["nvd","cve.org"],"epss":0.00178,"epssPercentile":0.07262,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-08T13:14:41.969804Z"},"scores":{"nvd":4.3,"cna":5.1},"ingestedAt":"2026-10-08T03:03:35.542Z","slug":"CVE-2026-87670","body":"## Overview\n\nAn authorization logic vulnerability exists in the Brocade Fabric OS versions before 10.0.1 REST API gateway. The internal gate guarding restricted management endpoints relies exclusively on client-controlled HTTP headers. An authenticated user with any valid REST session can spoof these headers to gain unauthorized access to internal management endpoints. This allows low-privilege users to view sensitive chassis metadata, hardware memory patrolling state, and firmware integrity audit logs.\n\n## Affected\n\n- `fabric_operating_system < 10.0.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `fabric_operating_system 10.0.1`","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":219823,"id":"CVE-2026-87670","ts":1791913175499,"field":"cvss","old":"5.1","new":"4.3"}]}