High severityGHSA Advisory· Published May 8, 2026· Updated May 8, 2026
CVE-2026-42273
CVE-2026-42273
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/dadrus/heimdallGo | < 0.17.14 | 0.17.14 |
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-72h4-mxfc-jx37ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-42273ghsaADVISORY
- github.com/dadrus/heimdall/commit/3d05e56a9e7ef0355f17482b4322054af4e85943nvdWEB
- github.com/dadrus/heimdall/pull/3208nvdWEB
- github.com/dadrus/heimdall/releases/tag/v0.17.14nvdWEB
- github.com/dadrus/heimdall/security/advisories/GHSA-72h4-mxfc-jx37nvdWEB
News mentions
0No linked articles in our index yet.