๐Ÿ” CVE Alert

CVE-2026-90447

UNKNOWN 0.0
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th

A routing rule selects between two different authentication mechanisms for the same downstream service based on the value of a client-supplied request header, rather than on any property the client cannot control. An authenticated user in possession of a shared service credential can set this header to route around the primary role-based authorization check and reach the alternate path's fixed, elevated role instead. This allows a low-privileged authenticated attacker who knows the shared credential to perform actions reserved for a higher-privileged role.

CWE CWE-290
Vendor cisa
Product malcolm
Published Sep 11, 2026
Last Updated Sep 14, 2026
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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