Netty: [codec-http2] Lack of Host Header Deduplication in HTTP/2→HTTP/1.x Translation Leads to Request Routing Bypass

Netty's HTTP/2-to-HTTP/1.x translation layer Http2StreamFrameToHttpObjectCodec and InboundHttp2ToHttpAdapter fails to deduplicate or validate Host headers when an HTTP/2 client supplies both the :authority pseudo-header and a literal host header in a single HEADERS frame. The translator maps...

PT-2026-63564

Name of the Vulnerable Software and Affected Versions Next.js versions 14.1.1 through 15.5.20 Next.js versions 16.0.0 through 16.2.10 Description When a Server Action forwards or redirects a request, an attacker can cause the server to send that outbound request to a malicious host, leading to...

PT-2026-63548

Name of the Vulnerable Software and Affected Versions Netty versions prior to 4.1.136.Final Netty versions prior to 4.2.16.Final Description The HTTP/2-to-HTTP/1.x translation layer, specifically within Http2StreamFrameToHttpObjectCodec and InboundHttp2ToHttpAdapter, fails to deduplicate or...

GHSA-2X63-GW47-W4MM websocket-driver-ruby: Denial of service via malformed Host header

Impact If this library is used to implement a WebSocket server on top of a TCP server, by using the WebSocket::Driver.server method, then a client can cause the server to crash by sending a Host header that is not a valid host:port string. When this happens, a URI::InvalidURIError exception is...

EUVD-2025-210492

In Microsoft Azure API Management through 2025-10-17, when self-service signup username/password Basic Authentication is enabled in Tenant A, an attacker can reuse the registration flow by changing the hostname or tenant identifier to Tenant B, even when Tenant B has signup disabled at the UI...

CVE-2025-66390

In Microsoft Azure API Management through 2025-10-17, when self-service signup username/password Basic Authentication is enabled in Tenant A, an attacker can reuse the registration flow by changing the hostname or tenant identifier to Tenant B, even when Tenant B has signup disabled at the UI...

CVE-2025-66390

In Microsoft Azure API Management through 2025-10-17, when self-service signup username/password Basic Authentication is enabled in Tenant A, an attacker can reuse the registration flow by changing the hostname or tenant identifier to Tenant B, even when Tenant B has signup disabled at the UI...

CVE-2025-66390

In Microsoft Azure API Management through 2025-10-17, when self-service signup username/password Basic Authentication is enabled in Tenant A, an attacker can reuse the registration flow by changing the hostname or tenant identifier to Tenant B, even when Tenant B has signup disabled at the UI...

CVE-2025-66390

CVE-2025-66390 affects Microsoft Azure API Management Developer Portal: when Basic Authentication signup is enabled in Tenant A, an attacker can register on Tenant B by altering the Host header, bypassing a UI-level signup disable because the underlying /signup API remains accessible and validate...

CVE-2025-66390

In Microsoft Azure API Management through 2025-10-17, when self-service signup username/password Basic Authentication is enabled in Tenant A, an attacker can reuse the registration flow by changing the hostname or tenant identifier to Tenant B, even when Tenant B has signup disabled at the UI...

EUVD-2026-41559

webpack-dev-server vulnerable to denial of service via a malformed Host or Origin header...

GHSA-M28W-2PQF-7QGJ webpack-dev-server vulnerable to denial of service via a malformed Host or Origin header

Impact An unauthenticated peer that can reach the webpack-dev-server process can terminate it by sending either a normal HTTP request with a malformed Host header, or a WebSocket upgrade to the default /ws endpoint with a malformed Origin header. The malformed header triggers an uncaught exceptio...

Server-side Request Forgery (SSRF)

Overview limesurvey/limesurvey is a FOSS online survey tool on the web. Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the unsanitized use of the HTTP Host header in the getTemplateData function. An attacker can access internal network services and cloud...

CVE-2026-63107

LimeSurvey through 6.17.10 and 7.0.4 contains a server-side request forgery vulnerability in the REST API survey template endpoint that allows authenticated users to cause the server to issue arbitrary HTTP requests by supplying a manipulated Host header. Attackers can exploit the unsanitized use...

EUVD-2026-46061

LimeSurvey through 6.17.10 and 7.0.4 contains a server-side request forgery vulnerability in the REST API survey template endpoint that allows authenticated users to cause the server to issue arbitrary HTTP requests by supplying a manipulated Host header. Attackers can exploit the unsanitized use...

CVE-2026-63107

LimeSurvey through 6.17.10 and 7.0.4 contains a server-side request forgery vulnerability in the REST API survey template endpoint that allows authenticated users to cause the server to issue arbitrary HTTP requests by supplying a manipulated Host header. Attackers can exploit the unsanitized use...

CVE-2026-63107 LimeSurvey SSRF via REST API Survey Template Host Header

LimeSurvey through 6.17.10 and 7.0.4 contains a server-side request forgery vulnerability in the REST API survey template endpoint that allows authenticated users to cause the server to issue arbitrary HTTP requests by supplying a manipulated Host header. Attackers can exploit the unsanitized use...

CVE-2026-63107

LimeSurvey (versions up to 6.17.10 and 7.0.4) contains a server-side request forgery in the REST API survey template endpoint. The vulnerability arises from unsanitized use of the HTTP Host header in getTemplateData(), allowing authenticated users to cause the server to issue arbitrary HTTP reque...

CVE-2026-63107 LimeSurvey SSRF via REST API Survey Template Host Header

LimeSurvey through 6.17.10 and 7.0.4 contains a server-side request forgery vulnerability in the REST API survey template endpoint that allows authenticated users to cause the server to issue arbitrary HTTP requests by supplying a manipulated Host header. Attackers can exploit the unsanitized use...

CVE-2026-63107 LimeSurvey SSRF via REST API Survey Template Host Header

LimeSurvey through 6.17.10 and 7.0.4 contains a server-side request forgery vulnerability in the REST API survey template endpoint that allows authenticated users to cause the server to issue arbitrary HTTP requests by supplying a manipulated Host header. Attackers can exploit the unsanitized use...