CVE-2026-90446

Server-Side Request Forgery in Malcolm

Published Sep 11, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
An application programming interface endpoint accepts a user-supplied value and interpolates it directly into the path of a backend request to the underlying search and analytics data store, without restricting its contents. This allows an authenticated attacker to substitute an arbitrary backend path, causing the application's own elevated service credentials to be used against unintended internal endpoints. This could allow an attacker to enumerate or read internal configuration and administrative data from the backend data store that would otherwise be restricted.

Remediation

Vendor Solution

The latest version of Malcolm (September 2026 or later) fixes these vulnerabilities. Affected users are encouraged to update their instance of Malcolm to the latest version.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Unauthorized Data Store Exposure via API Path Manipulation Server-Side Request Forgery in Malcolm
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

Type Values Removed Values Added
Title Unauthorized Data Store Exposure via API Path Manipulation
Type Values Removed Values Added
Title Authenticated Path Injection Exposes Sensitive Data Store Information
Type Values Removed Values Added
Title Authenticated Path Injection Exposes Sensitive Data Store Information
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title API Endpoint Path Disclosure via Unrestricted Backend Request in Malcolm
Type Values Removed Values Added
Title API Endpoint Path Disclosure via Unrestricted Backend Request in Malcolm
Type Values Removed Values Added
First Time appeared Cisagov
Cisagov malcolm
Vendors & Products Cisagov
Cisagov malcolm
Type Values Removed Values Added
Title Authenticated API Path Manipulation Exposes Sensitive Backend Data
Type Values Removed Values Added
Title Authenticated API Path Manipulation Exposes Sensitive Backend Data
Type Values Removed Values Added
Title API Path Injection Exposes Internal Data
Type Values Removed Values Added
Title API Path Injection Exposes Internal Data
Type Values Removed Values Added
Description An application programming interface endpoint accepts a user-supplied value and interpolates it directly into the path of a backend request to the underlying search and analytics data store, without restricting its contents. This allows an authenticated attacker to substitute an arbitrary backend path, causing the application's own elevated service credentials to be used against unintended internal endpoints. This could allow an attacker to enumerate or read internal configuration and administrative data from the backend data store that would otherwise be restricted.
Weaknesses CWE-918
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Oct 2, 2026, 9:14 PM
Reserved
Sep 11, 2026, 9:00 PM
Status
Awaiting Analysis
Published
Sep 11, 2026, 10:16 PM
Modified
Oct 2, 2026, 10:16 PM