Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-107333— Incorrect Authorization in Malcolm

Quick assessment

Affected
CISA Malcolm
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Malcolm 基于 Nginx 的反向代理服务器在其基于 Lua 的基于角色的访问控制（RBAC）授权层与 Nginx 自身请求路由逻辑之间存在 URL 路径规范化不一致的问题。经过身份验证的用户可以构造特殊格式的请求路径，从而绕过基于角色的访问限制，访问本不应具有权限的管理界面或受角色保护的接口。该漏洞影响所有由 RBAC 授权层保护的受限路径，包括文件上传、PHP 服务器、htadmin 以及身份验证管理接口。

CVSS 8.1 · High

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 2

VendorProduct Version RangeStatus
CISA Malcolm ≤ 26.07.1 affected
26.08.0 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-107333

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Incorrect Authorization in Malcolm
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
CISA Malcolm 0 ~ 26.07.1 -

II. Public POCs for CVE-2026-107333

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-107333

请登录查看更多情报信息。

Other References for CVE-2026-107333 (2)

Same Patch Batch · CISA · 2026-10-08 · 7 CVEs total

CVE-2026-107362 7.1 HIGH Server-Side Request Forgery in Malcolm
CVE-2026-107337 7.1 HIGH Cross-Site Request Forgery in Malcolm
CVE-2026-107336 6.5 MEDIUM Authentication Bypass by Spoofing in Malcolm
CVE-2026-107335 6.5 MEDIUM Improper Handling of Highly Compressed Data in Malcolm
CVE-2026-107334 5.4 MEDIUM Incorrect Authorization in Malcolm
CVE-2026-107361 4.2 MEDIUM Authentication Bypass Using an Alternate Path or Channel in Malcolm

IV. Related Vulnerabilities

Same product: Malcolm
Same vendor: CISA
Same weakness: CWE-863

V. Comments for CVE-2026-107333

No comments yet

Leave a comment