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NVD security advisory

Security advisory for Datadog dd-trace-py

CVE-2026-116589

Full advisory details, affected packages, severity context, and original source.

Affected technology

Datadog dd-trace-pyPython ecosystem

Advisory overview

Datadog dd-trace-py is the Datadog Python APM client. From 3.13.0 until 4.15.5, the IAST string-processing instrumentation does not properly handle certain internal errors while old-style % string formatting processes attacker-controlled input. An unhandled error can terminate the Python process and interrupt the work it is handling. Exploitation requires IAST to be enabled, which is not the default, and application code to apply the affected formatting operation to attacker-controlled input. This issue is fixed in version 4.15.5.

Related references

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Datadog dd-trace-py is the Datadog Python APM client. | Security report | Cevnitra