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CVE-2026-42273
Published: May 8, 2026
Modified: May 8, 2026
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.
| Vendor | Product | Versions |
|---|---|---|
dadrus | heimdall | affected < 0.17.14 |
References
https://github.com/dadrus/heimdall/security/advisories/GHSA-72h4-mxfc-jx37
x_refsource_CONFIRM
https://github.com/dadrus/heimdall/pull/3208
x_refsource_MISC
https://github.com/dadrus/heimdall/releases/tag/v0.17.14
x_refsource_MISC
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