{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-107334", "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "state": "PUBLISHED", "assignerShortName": "icscert", "dateReserved": "2026-10-07T18:31:15.966Z", "datePublished": "2026-10-08T17:32:00.480Z", "dateUpdated": "2026-10-08T19:04:45.258Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "shortName": "icscert", "dateUpdated": "2026-10-08T17:32:00.480Z" }, "title": "Incorrect Authorization in Malcolm", "datePublic": "2026-10-07T19:02:00.000Z", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-863", "description": "CWE-863 Incorrect Authorization", "type": "CWE" } ] } ], "affected": [ { "vendor": "CISA", "product": "Malcolm", "versions": [ { "status": "affected", "version": "0", "lessThanOrEqual": "26.07.1", "versionType": "custom" }, { "status": "unaffected", "version": "26.08.0" } ], "defaultStatus": "unaffected" } ], "descriptions": [ { "lang": "en", "value": "Malcolm's nginx Lua role-based access control (RBAC) layer decides whether an authenticated user may reach a role-restricted path (e.g. /htadmin, /auth, /admin_login, /arkime/api/esadmin, NetBox, upload endpoints) by pattern-matching the raw, percent-encoded request URI. Nginx itself, however, selects which location block actually serves the request using the percent-decoded, normalized URI. Because the RBAC check never percent-decodes its input, an authenticated low-privilege user can request an admin-only path using percent-encoding (e.g. /%68tadmin.php) and have nginx route it to the restricted location while the Lua RBAC gate evaluating the un-decoded raw string finds no matching restriction and grants access.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "Malcolm's nginx Lua role-based access control (RBAC) layer decides whether an authenticated user may reach a role-restricted path (e.g. /htadmin, /auth, /admin_login, /arkime/api/esadmin, NetBox, upload endpoints) by pattern-matching the raw, percent-encoded request URI. Nginx itself, however, selects which location block actually serves the request using the percent-decoded, normalized URI. Because the RBAC check never percent-decodes its input, an authenticated low-privilege user can request an admin-only path using percent-encoding (e.g. /%68tadmin.php) and have nginx route it to the restricted location while the Lua RBAC gate evaluating the un-decoded raw string finds no matching restriction and grants access." } ] } ], "references": [ { "url": "https://github.com/cisagov/Malcolm/security/advisories/GHSA-jr6p-63pg-hr6g", "tags": [ "government-resource" ] }, { "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-280-01.json" } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV3_1": { "version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseSeverity": "MEDIUM", "baseScore": 5.4, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N" } } ], "solutions": [ { "lang": "en", "value": "Update to version v26.08.0", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "Update to version v26.08.0" } ] } ], "credits": [ { "lang": "en", "value": "Seth Grover", "type": "finder" } ], "source": { "advisory": "ICSA-26-280-01", "discovery": "INTERNAL" }, "x_generator": { "engine": "Vulnogram 1.0.5" } }, "adp": [ { "references": [ { "url": "https://github.com/cisagov/Malcolm/security/advisories/GHSA-jr6p-63pg-hr6g", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-10-08T19:04:22.822418Z", "id": "CVE-2026-107334", "options": [ { "Exploitation": "poc" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-08T19:04:45.258Z" } } ] } }