CVE-2026-107333: high-severity vulnerability in CISA Malcolm
Incorrect Authorization in Malcolm
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 1.0%
exploitation probability
1.0%top 39% of all CVEs
observed exploitation
nono source reports it
Malcolm's nginx based reverse proxy contains a URL path normalization inconsistency between its Lua based role-based access control (RBAC) authorization layer and nginx's own request routing logic. An authenticated user can craft a specially formatted request path to bypass role-based restrictions and reach administrative or role gated endpoints they should not have access to. This affects all restricted paths protected by the RBAC authorization layer, including file upload, PHP server, htadmin, and authentication management interfaces.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Affected products
CISA · MalcolmRelated CVEs — CISA Malcolm
In the same product, most dangerous first.
CVE-2026-107335MEDIUMImproper Handling of Highly Compressed Data in MalcolmEPSS 0.5%CVE-2026-107362HIGHServer-Side Request Forgery in MalcolmEPSS 0.3%CVE-2026-90445HIGHPath Traversal in MalcolmEPSS 0.3%CVE-2026-90444HIGHOS Command Injection in MalcolmEPSS 0.3%CVE-2026-90456CRITICALUse of default credentials in MalcolmEPSS 0.3%CVE-2026-90451HIGHUse of Default Credentials in MalcolmEPSS 0.3%