Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/DataDog/dd-trace-dotnet/commit/38092e0d41a36decbe649e048e48ae
- https://github.com/DataDog/dd-trace-dotnet/pull/8555
- https://github.com/DataDog/dd-trace-dotnet/releases/tag/v3.43.0
- https://github.com/DataDog/dd-trace-dotnet/security/advisories/GHSA-38wr-vpc7-2m
FAQ
What is CVE-2026-50273?
CVE-2026-50273 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 wit...
How severe is CVE-2026-50273?
CVE-2026-50273 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-50273?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.