CVE-2026-42191

OpenTelemetry.Exporter.OpenTelemetryProtocol (OTLP exporter) Vulnerability: from 1.8.0 through 1.15.2, when OTEL_DOTNET_EXPERIMENTAL_OTLP_RETRY=disk is used without OTEL_DOTNET_EXPERIMENTAL_OTLP_DISK_RETRY_DIRECTORY_PATH, the retry storage root is resolved with Path.GetTempPath(). The exporter st...

CVE-2026-42191 OpenTelemetry.Exporter.OpenTelemetryProtocol: Disk retry default temp path enables local blob injection for OTLP Exporter

OpenTelemetry.Exporter.OpenTelemetryProtocol is the OTLP OpenTelemetry Protocol exporter implementation. From 1.8.0 to 1.15.2, the OTLP disk retry feature in OpenTelemetry.Exporter.OpenTelemetryProtocol silently fell back to Path.GetTempPath when OTELDOTNETEXPERIMENTALOTLPRETRY=disk was set but...