Denial of Service Vulnerability in Datadog Python APM Client
CVE-2026-50271

7.5HIGH

Key Information:

Vendor

Datadog

Status
Dd-trace-py
Vendor
CVE Published:
17 July 2026

What is CVE-2026-50271?

The Datadog Python APM client, dd-trace-py, prior to version 4.8.2, is susceptible to a denial of service vulnerability due to the lack of enforcement on baggage header limits. This could allow an unauthenticated remote attacker to exploit the system by sending crafted requests with an excessive number of key-value pairs or very large values in the baggage HTTP headers. The resulting unbounded consumption of CPU and memory can severely disrupt HTTP services that enable baggage propagation. This vulnerability is addressed in version 4.8.2.

Affected Version(s)

dd-trace-py < 4.8.2

References

https://github.com/DataDog/dd-trace-py/security/advisorie...
x_refsource_CONFIRM
https://github.com/DataDog/dd-trace-py/pull/17926
x_refsource_MISC
https://github.com/DataDog/dd-trace-py/commit/9c80faa3dcf...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.