High [CVE-2026-50274] Datadog dd-trace-go: Denial of Service via malicious baggage headers
This high-severity Red Hat Linux advisory covers CVE-2026-50274.
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Summary
Datadog dd-trace-go is a Go client library for Datadog application performance monitoring, profiling, and security monitoring. Prior to 2.8.1, 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 limits on the extract path.
A remote, unauthenticated attacker can send a request whose baggage header contains an arbitrarily large number of comma-separated key-value pairs or a single very large value, causing unbounded CPU and memory consumption and enabling a remote denial of service against HTTP services with baggage propagation enabled. This issue is fixed in version 2.8.1.
Red Hat Advanced Cluster Management for Kubernetes and OpenShift Container Platform 4.21+ ship versions of the Datadog dd-trace-go v2 library prior to v2.8.1 that are vulnerable to this denial-of-service flaw in W3C baggage header parsing. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-770.
- < 2.8.1
Official advisory · high-confidence parse· fetched 6 days ago·verify at source
Mitigation checklist
- If Datadog APM tracing with W3C baggage propagation is enabled, disable the baggage propagator by setting the DD_TRACE_PROPAGATION_STYLE environment variable to exclude 'baggage'.
Official advisory · high-confidence parse· fetched 6 days ago·verify at source
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