CVE-2026-57209
Heimdall: Forwarded Header Injection via Unsanitized Host Header in Proxy Mode in github.com/dadrus/heimdall
Description
Heimdall: Forwarded Header Injection via Unsanitized Host Header in Proxy Mode in github.com/dadrus/heimdall
How to fix CVE-2026-57209
To remediate CVE-2026-57209, upgrade the affected package to a fixed version below.
- Go/github.com/dadrus/heimdall—upgrade to 0.17.17 or later
- Go/github.com/dadrus/heimdall—upgrade to 0.17.17 or later
Is CVE-2026-57209 being exploited?
No exploitation signal available. Neither CISA KEV nor a current EPSS score has been published for CVE-2026-57209.
Affected packages (2)
- from 0, < 0.17.17
- from 0, < 0.17.17
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N |