Description
A deployment mode intended to expose only read access to stored data proxies a set of application programming interface routes without restricting which request methods are allowed. One such route accepts a request that creates or overwrites a stored record, including an attacker-chosen identifier, using the application's own elevated backend credentials. This allows an authenticated user on a deployment intended to be read-only to forge or overwrite stored records that should not be modifiable in that deployment mode.
Published: 2026-09-11
Score: 7.1 High
EPSS: < 1% Very Low
KEV: No
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

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

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Fri, 02 Oct 2026 23:30:00 +0200

Type Values Removed Values Added
Title Missing Authorization in Malcolm
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'}


Tue, 15 Sep 2026 23:15:00 +0200

Type Values Removed Values Added
Title Authorized Request Method Misconfiguration Allows Record Overwrite in Read‑Only Mode

Tue, 15 Sep 2026 07:45:00 +0200

Type Values Removed Values Added
Title Authorized Request Method Misconfiguration Allows Record Overwrite in Read‑Only Mode

Mon, 14 Sep 2026 23:00:00 +0200

Type Values Removed Values Added
Title Read-Only Mode Allows Authenticated Record Modification
Metrics ssvc

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


Mon, 14 Sep 2026 12:15:00 +0200

Type Values Removed Values Added
Title Read-Only Mode Allows Authenticated Record Modification

Mon, 14 Sep 2026 05:00:00 +0200

Type Values Removed Values Added
Title Read‑Only Mode Allows Authenticated Record Overwrite in Malcolm

Sun, 13 Sep 2026 21:30:00 +0200

Type Values Removed Values Added
First Time appeared Cisagov
Cisagov malcolm
Vendors & Products Cisagov
Cisagov malcolm

Sun, 13 Sep 2026 18:45:00 +0200

Type Values Removed Values Added
Title Read‑Only Mode Allows Authenticated Record Overwrite in Malcolm

Sun, 13 Sep 2026 11:00:00 +0200

Type Values Removed Values Added
Title Read‑Only Mode Exposes Write Routes Allowing Unauthorized Record Modification

Sun, 13 Sep 2026 01:45:00 +0200

Type Values Removed Values Added
Title Read‑Only Mode Exposes Write Routes Allowing Unauthorized Record Modification

Sat, 12 Sep 2026 17:00:00 +0200

Type Values Removed Values Added
Title Unauthorized Write via Read‑Only Deployment Mode in Malcolm

Sat, 12 Sep 2026 10:15:00 +0200

Type Values Removed Values Added
Title Unauthorized Write via Read‑Only Deployment Mode in Malcolm

Sat, 12 Sep 2026 01:45:00 +0200

Type Values Removed Values Added
Description A deployment mode intended to expose only read access to stored data proxies a set of application programming interface routes without restricting which request methods are allowed. One such route accepts a request that creates or overwrites a stored record, including an attacker-chosen identifier, using the application's own elevated backend credentials. This allows an authenticated user on a deployment intended to be read-only to forge or overwrite stored records that should not be modifiable in that deployment mode.
Weaknesses CWE-862
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: icscert

Published:

Updated: 2026-10-02T21:09:57.540Z

Reserved: 2026-09-11T21:00:09.300Z

Link: CVE-2026-90448

cve-icon Vulnrichment

Updated: 2026-09-14T16:12:50.482Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-11T22:16:46.950

Modified: 2026-10-02T22:16:55.330

Link: CVE-2026-90448

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-15T23:00:17Z

Weaknesses