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.

INFO

Published Date :

2026-05-08T03:42:50.312Z

Last Modified :

2026-05-08T10:40:56.541Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-42273 vulnerability.

Vendors Products
Dadrus
  • Heimdall
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-42273.

URL Resource
https://github.com/dadrus/heimdall/commit/3d05e56a9e7ef0355f17482b4322054af4e85943 cve-icon cve-icon
https://github.com/dadrus/heimdall/pull/3208 cve-icon cve-icon
https://github.com/dadrus/heimdall/releases/tag/v0.17.14 cve-icon cve-icon
https://github.com/dadrus/heimdall/security/advisories/GHSA-72h4-mxfc-jx37 cve-icon cve-icon
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