diff --git a/go.mod b/go.mod
index 04eb04735479..e7210d5be42a 100644
--- a/go.mod
+++ b/go.mod
@@ -111,7 +111,7 @@ require (
 	golang.org/x/sys v0.47.0
 	golang.org/x/time v0.15.0
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20260803160001-6ac0973c030d
-	google.golang.org/grpc v1.83.1
+	google.golang.org/grpc v1.83.2
 	google.golang.org/protobuf v1.36.12
 	kernel.org/pub/linux/libs/security/libcap/cap v1.2.78
 	tags.cncf.io/container-device-interface v1.1.0
diff --git a/go.sum b/go.sum
index 298877572e3c..d3e2a1118c13 100644
--- a/go.sum
+++ b/go.sum
@@ -689,8 +689,8 @@ google.golang.org/genproto/googleapis/api v0.0.0-20260803160001-6ac0973c030d h1:
 google.golang.org/genproto/googleapis/api v0.0.0-20260803160001-6ac0973c030d/go.mod h1:K/+WGbmBY7aNW1HDw1fJnKYo10i0DkAX6pows00dLig=
 google.golang.org/genproto/googleapis/rpc v0.0.0-20260803160001-6ac0973c030d h1:IL4hdHzcUv2l/gcg98/Rj3FbtE6axwqslOW8SW0C+S0=
 google.golang.org/genproto/googleapis/rpc v0.0.0-20260803160001-6ac0973c030d/go.mod h1:4Hqkh8ycfw05ld/3BWL7rJOSfebL2Q+DVDeRgYgxUU8=
-google.golang.org/grpc v1.83.1 h1:HIO0+BEtBP6soyqvqC8sNUjZ7bTs+0hFQuFF+RAy++Y=
-google.golang.org/grpc v1.83.1/go.mod h1:kDyl6SKsiHKt0uylY5gtn5cEjkrIOhQOGDgIc4JGwzQ=
+google.golang.org/grpc v1.83.2 h1:EManeRomTObA0BU7I8vXgg/78uE5MJ9M8B39EX2WscU=
+google.golang.org/grpc v1.83.2/go.mod h1:YPI1hK3kDked6iHvgX3tR0y+nX/qpMFKhPgFsokw1S8=
 google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.6.2 h1:rgSNvqscFZ1JgV/4wH5GOsZFSFkR2Eua9As3KIr2LlM=
 google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.6.2/go.mod h1:iMEtFwDlAhjDU9L5mY6U1XLwlIId/G3h+QcBHDIvrJ8=
 google.golang.org/protobuf v1.36.12 h1:pJOKDDOyeXErUroCihFAd5LQuwXBSpVnKGrj5o/fwxc=
diff --git a/vendor/google.golang.org/grpc/internal/transport/http2_server.go b/vendor/google.golang.org/grpc/internal/transport/http2_server.go
index 63c6539a3d32..82e13e64aa67 100644
--- a/vendor/google.golang.org/grpc/internal/transport/http2_server.go
+++ b/vendor/google.golang.org/grpc/internal/transport/http2_server.go
@@ -522,6 +522,12 @@ func (t *http2Server) operateHeaders(ctx context.Context, frame *http2.MetaHeade
 		delete(mdata, "host")
 	}
 
+	// If :authority is still missing, i.e. no host or :authority header is
+	// present, reject the request as invalid.
+	if len(mdata[":authority"]) == 0 {
+		t.writeEarlyAbort(streamID, s.contentSubtype, status.New(codes.Internal, "no host or :authority header present"), http.StatusBadRequest, !frame.StreamEnded())
+		return nil
+	}
 	if frame.StreamEnded() {
 		// s is just created by the caller. No lock needed.
 		s.state = streamReadDone
diff --git a/vendor/google.golang.org/grpc/version.go b/vendor/google.golang.org/grpc/version.go
index 64ec3b3cfd04..835dc07fdc50 100644
--- a/vendor/google.golang.org/grpc/version.go
+++ b/vendor/google.golang.org/grpc/version.go
@@ -19,4 +19,4 @@
 package grpc
 
 // Version is the current grpc version.
-const Version = "1.83.1"
+const Version = "1.83.2"
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 42dd76992c65..ece1e578a397 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -1314,7 +1314,7 @@ google.golang.org/genproto/googleapis/api/httpbody
 ## explicit; go 1.25.0
 google.golang.org/genproto/googleapis/rpc/errdetails
 google.golang.org/genproto/googleapis/rpc/status
-# google.golang.org/grpc v1.83.1
+# google.golang.org/grpc v1.83.2
 ## explicit; go 1.25.0
 google.golang.org/grpc
 google.golang.org/grpc/attributes