CVE Catalog

CVE-2026-50271

HighCVSS 7.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.44%

36th percentile - higher than 36% of all known CVEs

Summary

The dd-trace-py (Python) library for Datadog does not enforce limits on the number or size of items in W3C baggage headers during extraction. A remote, unauthenticated attacker can send a request with an arbitrarily large number of key-value pairs or a single very large value, causing unbounded CPU and memory consumption.

Risk Assessment

The organization is at risk of remote denial of service (DoS) in HTTP applications using baggage propagation, potentially disrupting monitored services.

Recommendation

Update dd-trace-py to version 4.8.2 or later, which introduces DD_TRACE_BAGGAGE_MAX_ITEMS and DD_TRACE_BAGGAGE_MAX_BYTES limits.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS