CVE-2026-116589 Datadog dd-trace-py: IAST instrumentation can lead to application DOS

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...

CVE-2026-116589

The Datadog dd-trace-py Python APM client (versions 3.13.0 through 4.15.5 ) contains a vulnerability in its IAST string-processing instrumentation . The root cause is the failure to properly handle internal errors during old-style % string formatting when processing attacker-controlled input. If ...