CVE Catalog

CVE-2026-50275

HighCVSS 7.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Elevated risk
0.68%

50th percentile - higher than 50% of all known CVEs

Summary

In Datadog PHP Tracer prior to 1.19.2, ddtrace_deserialize_baggage parses incoming W3C baggage headers without enforcing DD_TRACE_BAGGAGE_MAX_ITEMS or DD_TRACE_BAGGAGE_MAX_BYTES. A remote unauthenticated client can send many key-value pairs or one oversized value, causing unbounded CPU and memory consumption.

Risk Assessment

Internet-facing deployments can experience denial of service due to excessive resource consumption on each request.

Recommendation

Upgrade Datadog PHP Tracer to version 1.19.2 or later; until then consider removing baggage from DD_TRACE_PROPAGATION_STYLE or DD_TRACE_PROPAGATION_STYLE_EXTRACT.

Related vulnerabilities

Original NVD description (English source)

The Datadog PHP Tracer provides application performance monitoring and distributed tracing for PHP. Prior to 1.19.2, ddtrace_deserialize_baggage in ext/distributed_tracing_headers.c parses incoming W3C baggage HTTP headers without enforcing DD_TRACE_BAGGAGE_MAX_ITEMS or DD_TRACE_BAGGAGE_MAX_BYTES. A remote unauthenticated client can send an arbitrarily large number of comma-separated key-value pairs or a single oversized value, causing the tracer to allocate hash-map entries and consume unbounded CPU and memory on each request. Baggage extraction is enabled by default in most affected deployments unless baggage is removed from DD_TRACE_PROPAGATION_STYLE or DD_TRACE_PROPAGATION_STYLE_EXTRACT. This issue is fixed in version 1.19.2.

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