CVE-2026-50273
Datadog .NET Tracer: Improper parsing of W3C baggage headers may lead to DoS
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-770 |
| Vendor | datadog |
| Product | dd-trace-dotnet |
| Published | Jul 17, 2026 |
| Last Updated | Jul 17, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
DataDog / dd-trace-dotnet
< 3.43.0
References
github.com: https://github.com/DataDog/dd-trace-dotnet/security/advisories/GHSA-38wr-vpc7-2mp4 github.com: https://github.com/DataDog/dd-trace-dotnet/pull/8555 github.com: https://github.com/DataDog/dd-trace-dotnet/commit/38092e0d41a36decbe649e048e48ae1b1607292f github.com: https://github.com/DataDog/dd-trace-dotnet/releases/tag/v3.43.0