cvedb.io
CVE-2026-40891
MEDIUM · CVSS 5.3
EPSS exploitation probability: 0%
Published 2026-04-23T18:16:28.483 · Last modified 2026-06-17T10:45:50.140

Summary

OpenTelemetry dotnet is a dotnet telemetry framework. From 1.13.1 to before 1.15.2, When exporting telemetry over gRPC using the OpenTelemetry Protocol (OTLP), the exporter may parse a server-provided grpc-status-details-bin trailer during retry handling. Prior to the fix, a malformed trailer could encode an extremely large length-delimited protobuf field which was used directly for allocation, allowing excessive memory allocation and potential denial of service (DoS). This vulnerability is fixed in 1.15.2.

Affected products

opentelemetry — opentelemetry

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.