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Vulnerability · Published Jul 17, 2026 · Assigned by GitHub_M

CVE-2026-50274dd-trace-go: Improper parsing of W3C baggage headers may lead to DoS

High 7.5

In plain English

A high-severity resource allocation without limits in dd-trace-go from DataDog. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.8%top 43.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Gogithub.com/DataDog/dd-trace-gono fix listedGHSA-74j5-xf3v-crq8
Gogithub.com/DataDog/dd-trace-gono fix listedGO-2026-6000
Gogithub.com/DataDog/dd-trace-go/v22.8.1GHSA-74j5-xf3v-crq8
Gogithub.com/DataDog/dd-trace-go/v22.8.1GO-2026-6000

Affected products (as reported)

VendorProductVersions
DataDog dd-trace-go < 2.8.1

Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References