{"id":"CVE-2026-107334","title":"Malcolm's nginx Lua role-based access control (RBAC) layer decides whether an authenticated user may reach a role-restricted path (e.g","summary":"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…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","cwe":["CWE-863"],"vendor":"CISA","product":"Malcolm","affected":["Malcolm <= 26.07.1"],"published":"2026-10-08","updated":"2026-10-08","sourceUpdated":"2026-10-08T21:03:43.847","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-107334","references":[{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-280-01.json","label":"ics-cert@hq.dhs.gov"},{"url":"https://github.com/cisagov/Malcolm/security/advisories/GHSA-jr6p-63pg-hr6g","label":"ics-cert@hq.dhs.gov"},{"url":"https://github.com/cisagov/Malcolm/security/advisories/GHSA-jr6p-63pg-hr6g","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-08T17:56:11.735Z","slug":"CVE-2026-107334","body":"## Overview\n\nMalcolm'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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}