๐Ÿ” CVE Alert

CVE-2026-90454

MEDIUM 4.3

Missing authorization in Malcolm

CVSS Score
4.3
EPSS Score
0.4%
EPSS Percentile
26th

A deployment mode intended to expose only read access to a bundled packet-analysis component's interface denies a list of write-capable routes by pattern, but the pattern omits routes that modify tags attached to stored session records, and the proxy configuration otherwise permits the request method those routes use. This allows an authenticated user on a deployment intended to be read-only to add or remove tags on stored session records.

CWE CWE-862
Vendor cisa
Product malcolm
Published Sep 11, 2026
Last Updated Oct 2, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

Affected Versions

CISA / Malcolm
0 < v26.06.0

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
raw.githubusercontent.com: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-254-01.json cisa.gov: https://www.cisa.gov/news-events/ics-advisories/icsa-26-254-01