{"schema":"threatline.record/2","record":{"id":"CVE-2026-107336","aliases":["GHSA-7j32-cf27-cp6h"],"summary":"Authentication Bypass by Spoofing in Malcolm","details":"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.","categories":["Unclassified"],"product":"Malcolm","vendor":"CISA","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-107336","source_modified_at":"2026-10-14T19:39:35.096Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Malcolm","vendor":"CISA","versions":[{"status":"affected","version":"0","lessThanOrEqual":"26.07.1","versionType":"custom"},{"status":"unaffected","version":"26.08.0"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":6.5,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00241,"percentile":0.14432,"score_date":"2026-10-23"},"published_at":"2026-10-08T17:20:46.517Z","modified_at":"2026-10-14T19:39:35.096Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-107336","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-14T19:39:35.096Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-107336","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/cisagov/Malcolm/security/advisories/GHSA-7j32-cf27-cp6h"},{"source":"CVE List","url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-280-01.json","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-08T19:07:14.526487Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-14T19:39:35.096Z","content_hash":"2979947d0297a5cd93b73f2b48af6ea430b9c57ea402874fd14f6010a2e8bc5f"}}