CVE-2026-47220

The CVE describes a crash in Envoy when using %REQUESTED_SERVER_NAME(X:Y)% in log format with host-related options (e.g., HOST_FIRST, SNI_FIRST) and the specified host header is missing in the request headers. Affected versions are 1.37.0 through 1.37.5 and 1.38.3. The vulnerability arises from t...

CVE-2026-47220 Envoy: Segmentation fault when using %REQUESTED_SERVER_NAME% in log format

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.37.0 until 1.37.5 and 1.38.3, when the %REQUESTEDSERVERNAMEX:Y% is used in log format and host related options is specified, like HOSTFIRST, SNIFIRST, it's possible to crash Envoy when the specified host...

CVE-2026-47220 Envoy: Segmentation fault when using %REQUESTED_SERVER_NAME% in log format

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.37.0 until 1.37.5 and 1.38.3, when the %REQUESTEDSERVERNAMEX:Y% is used in log format and host related options is specified, like HOSTFIRST, SNIFIRST, it's possible to crash Envoy when the specified host...

CVE-2026-47220

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.37.0 until 1.37.5 and 1.38.3, when the %REQUESTEDSERVERNAMEX:Y% is used in log format and host related options is specified, like HOSTFIRST, SNIFIRST, it's possible to crash Envoy when the specified host...

PT-2026-52894

Name of the Vulnerable Software and Affected Versions Envoy versions 1.37.0 through 1.37.4 Envoy versions 1.38.0 through 1.38.2 Description Envoy can crash when the %REQUESTED SERVER NAMEX:Y% variable is used in the log format and host-related options such as HOST FIRST or SNI FIRST are specified...

CLSA-2025-1756324356 Fix CVE(s): CVE-2025-49630

SECURITY UPDATE: denial of service attack caused by untrusted clients triggering assertion in modproxyhttp2 - debian/patches/CVE-2025-49630.patch: tolerate missing host header in h2 proxy to fix issue with HTTP/0.9 request without Host header - CVE-2025-49630...

EAP7: Internal IP address disclosed on redirect when request header Host field is not set

It was found that when issuing a GET request which results in a 302 redirect, and when the request header 'Host' field was not set, the response header field 'Location' contains the internal IP address of the server. An attacker could use this disclose information which they are not authorized to...

EAP7: Internal IP address disclosed on redirect when request header Host field is not set

It was found that when issuing a GET request which results in a 302 redirect, and when the request header 'Host' field was not set, the response header field 'Location' contains the internal IP address of the server. An attacker could use this disclose information which they are not authorized to...

EAP7: Internal IP address disclosed on redirect when request header Host field is not set

It was found that when issuing a GET request which results in a 302 redirect, and when the request header 'Host' field was not set, the response header field 'Location' contains the internal IP address of the server. An attacker could use this disclose information which they are not authorized to...

EAP7: Internal IP address disclosed on redirect when request header Host field is not set

It was found that when issuing a GET request which results in a 302 redirect, and when the request header 'Host' field was not set, the response header field 'Location' contains the internal IP address of the server. An attacker could use this disclose information which they are not authorized to...