CVE-2026-57209
Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.17, when Heimdall operates in pro
CVSS
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Sin CVSS
EPSS
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KEV
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Exploit Today
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0-100
Publicado: 23 oct 2026 · Última mod.: 23 oct 2026 · CWE-20 · CWE-74
Sin historial EPSS suficiente todavía.
Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.17, when Heimdall operates in proxy mode, it constructs the Forwarded HTTP header after executing the matched rule pipeline by inserting the incoming request's Host header value directly into the header string without sanitizing commas or semicolons. This allows an attacker to inject additional parameters into the Forwarded header, potentially spoofing IP addresses for upstream services. This issue has been patched in version 0.17.17.