high7.5
CVE-2026-50273
Datadog .NET Tracer is a client library for Datadog APM for .NET applications.
Impact
Datadog .NET Tracer is a client library for Datadog APM for .NET applications. Prior to 3.43.0, Datadog tracing libraries that implement W3C baggage propagation parse incoming baggage HTTP headers without enforcing DD_TRACE_BAGGAGE_MAX_ITEMS or DD_TRACE_BAGGAGE_MAX_BYTES on extraction, allowing a remote unauthenticated attacker to send a baggage header with many comma-separated key-value pairs or one very large value and cause unbounded CPU and memory consumption in services with baggage propagation enabled. This issue is fixed in version 3.43.0.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| nuget | Datadog.Trace | < 3.43.0 | 3.43.0 |
| nuget | Datadog.Trace.OpenTracing | < 3.43.0 | 3.43.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-38wr-vpc7-2mp4
- https://github.com/DataDog/dd-trace-dotnet/security/advisories/GHSA-38wr-vpc7-2mp4
- https://github.com/DataDog/dd-trace-dotnet/commit/38092e0d41a36decbe649e048e48ae1b1607292f
- https://github.com/DataDog/dd-trace-dotnet/pull/8555
- https://github.com/DataDog/dd-trace-dotnet/releases/tag/v3.43.0