Security Advisory

CVE-2026-42273

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-08 03:42:50

Last updated 2026-05-08 10:40:56

Assigner GitHub_M

CVSS score 7.8

State PUBLISHED

Description

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.14, Heimdall performs host matching in a case-sensitive manner, while HTTP hostnames are case-insensitive. This discrepancy can result in heimdall failing to match a rule for a request host that differs only in letter casing, potentially causing the request to be classified differently than intended. This issue has been patched in version 0.17.14.

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