CVE-2026-50271 | Datadog dd-trace-py is the Datadog Python APM client. Prior … | CVSS 7.5 HIGH

Description

Datadog dd-trace-py is the Datadog Python APM client. Prior to 4.8.2, 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 4.8.2.

Metadata

CVE ID: CVE-2026-50271
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-04 16:26 UTC
Published: 2026-07-17 20:42 UTC
Last updated: 2026-07-17 20:42 UTC
Primary CWE: CWE-770
CWE-770: Allocation of Resources Without Limits or Throttlin…
Vendor / Product: DataDog / dd-trace-py
Sources: cve.org · NVD

Severity & Metrics

7.5 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products (1)

Vendor	Product	Platform	Versions
DataDog	dd-trace-py	—	< 4.8.2

Weakness (CWE)

CWE	Source	Description
CWE-770	cna	CWE-770: Allocation of Resources Without Limits or Throttling

CVSS scores (1)

Score	Severity	Version	Source	Vector
7.5	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References (4)

https://github.com/DataDog/dd-trace-py/security/advisories/GHSA-mw54-j2v2-42hr https://github.com/DataDog/dd-trace-py/security/advisories/GHSA-mw54-j2v2-42hr
https://github.com/DataDog/dd-trace-py/pull/17926 https://github.com/DataDog/dd-trace-py/pull/17926
https://github.com/DataDog/dd-trace-py/commit/9c80faa3dcfe238d008c3b3cd0b8e5dfef0aa4cd https://github.com/DataDog/dd-trace-py/commit/9c80faa3dcfe238d008c3b3cd0b8e5dfef0aa4cd
https://github.com/DataDog/dd-trace-py/releases/tag/v4.8.2 https://github.com/DataDog/dd-trace-py/releases/tag/v4.8.2