CVE-2026-107333
highpriority · track · 0OT risk · elevatedEPSS 0.010 · 62 %ileUSEPSS · scored 2026-10-28
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.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedMalcolmcisa_csaf_ot
This vulnerability was patched in Malcolm Version v26.09.0
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- ICSA-26-280-01CISA Malcolm2026-10-07icsa · cisa_csaf_otUS
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities.
sources
Which sources assert this record, and when.
references (2) nvd
External citations — patches, advisories, analysis.
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