{"id":"CVE-2026-107336","revision":"7762dd11bbb94a6cb8ab0e093d82fc71","records":[{"revision":"7762dd11bbb94a6cb8ab0e093d82fc71","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-107336","aliases":[],"title":"Authentication Bypass by Spoofing in Malcolm","description":"Malcolm's front nginx reverse proxy defines a \"Dashboards → Arkime shortcut\" location using a case-insensitive regex matcher but a case-sensitive rewrite. A request whose path segment is not exact-lowercase (for example /IDDASH2ARK/...) enters the location (the matcher fires) but evades the rewrite (no redirect is issued), so nginx falls through to the location's proxy_pass to the Arkime backend. That location is the one proxied location in the shipped config that does not include the per-location authentication file, so the request reaches Arkime unauthenticated. The same location also forwards a client-supplied X-Forwarded-User header un-overwritten, and Arkime is configured to trust X-Forwarded-User as the authenticated username — so an unauthenticated network caller can reach the Arkime backend while supplying a forged, auto-provisioned identity.","state":0,"publishedAt":"2026-10-08T17:20:46.517+00:00","modifiedAt":"2026-10-14T19:39:35.096+00:00","affected":[{"ecosystem":"Vendor product","name":"Malcolm","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"CISA\",\n                    \"product\": \"Malcolm\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"26.07.1\",\n                            \"versionType\": \"custom\"\n                        },\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"26.08.0\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/cisagov/Malcolm/security/advisories/GHSA-7j32-cf27-cp6h","https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-280-01.json"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-107336","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-107336","identifiers":["CVE-2026-107336"]},"retained":false,"historicalAffected":[]}],"coverage":[]}