CVE-2026-50273

HIGH

Datadog .NET Tracer < 3.43.0 - Baggage Header Denial of Service

Title source: manual
STIX 2.1

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.

References (4)

Core 4

Scores

CVSS v3 7.5
EPSS 0.0048
EPSS Percentile 39.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-770
Status published
Products (1)
DataDog/dd-trace-dotnet < 3.43.0
Published Jul 17, 2026
Tracked Since Jul 18, 2026