CVE-2026-50273
Published:July 17, 2026
Updated:July 21, 2026
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
Datadog.Trace.OpenTracing (DOT_NET):
Affected version(s) >=0.3.1.0 <3.43.0Fix Suggestion:
Update to version 3.43.0Datadog.Trace (DOT_NET):
Affected version(s) >=3.0.0.0 <3.43.0Fix Suggestion:
Update to version 3.43.0datadog.trace.opentracing (NUGET):
Affected version(s) >=0.2.3-alpha <3.43.0Fix Suggestion:
Update to version 3.43.0datadog.trace (NUGET):
Affected version(s) >=0.1.0 <3.43.0Fix Suggestion:
Update to version 3.43.0Related Resources (5)
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Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
EPSS
Base Score:
0.79