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CVE-2026-50271

dd-trace-py: Improper parsing of W3C baggage headers may lead to DoS PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
DataDog / dd-trace-pyaffected < 4.8.2

CWE

CWE-770

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.