Opentelemetry Exporter Opentelemetryprotocol
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Memory exhaustion via unbounded protobuf allocation in OpenTelemetry.Exporter.OpenTelemetryProtocol (NuGet) affects versions 1.13.1 through 1.15.2 when exporting telemetry over OTLP/gRPC. An attacker controlling the gRPC collector endpoint or intercepting telemetry traffic can return a malformed grpc-status-details-bin trailer on a retryable response, causing the instrumented .NET process to attempt an arbitrarily large byte array allocation and exhaust available memory. No public exploit exists and SSVC confirms no active exploitation; a vendor patch is available in 1.15.3.
Memory exhaustion via unbounded protobuf allocation in OpenTelemetry.Exporter.OpenTelemetryProtocol (NuGet) affects versions 1.13.1 through 1.15.2 when exporting telemetry over OTLP/gRPC. An attacker controlling the gRPC collector endpoint or intercepting telemetry traffic can return a malformed grpc-status-details-bin trailer on a retryable response, causing the instrumented .NET process to attempt an arbitrarily large byte array allocation and exhaust available memory. No public exploit exists and SSVC confirms no active exploitation; a vendor patch is available in 1.15.3.