CVE-2026-116588

A flaw was found in dd-trace-py. The default regular expression used for query-string obfuscation can encounter excessive backtracking when processing input for HTTP tracing metadata. A remote attacker can exploit this vulnerability by submitting specially crafted URL query strings, resulting in...

CVE-2026-116588

Datadog dd-trace-py is the Datadog Python APM client. From 1.5.0 until 3.19.9 and 4.15.6, the default query-string obfuscation regular expression can exhibit excessive backtracking while synchronously processing attacker-controlled URL query strings for HTTP span metadata. A remote attacker can...

EUVD-2026-110470

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 ...

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...

EUVD-2026-110469

Datadog dd-trace-py is the Datadog Python APM client. From 1.5.0 until 3.19.9 and 4.15.6, the default query-string obfuscation regular expression can exhibit excessive backtracking while synchronously processing attacker-controlled URL query strings for HTTP span metadata. A remote attacker can...

CVE-2026-116588

The Datadog dd-trace-py Python APM client (versions 1.5.0 through 3.19.9 and 4.15.6) is vulnerable to a Regular Expression Denial of Service (ReDOS) . The flaw exists in the default query-string obfuscation regular expression, which can undergo excessive backtracking when synchronously processing...

CVE-2026-116588 Datadog dd-trace-py: ReDOS in URL query string obfuscation

Datadog dd-trace-py is the Datadog Python APM client. From 1.5.0 until 3.19.9 and 4.15.6, the default query-string obfuscation regular expression can exhibit excessive backtracking while synchronously processing attacker-controlled URL query strings for HTTP span metadata. A remote attacker can...

PT-2026-64073

Impact Datadog tracing libraries that implement W3C baggage propagation parse incoming baggage HTTP headers without enforcing item-count or byte-size limits on the extract path. The DD TRACE BAGGAGE MAX ITEMS default 64 and DD TRACE BAGGAGE MAX BYTES default 8192 limits were applied only to bagga...

CVE-2026-50271

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 DDTRACEBAGGAGEMAXITEMS or DDTRACEBAGGAGEMAXBYTES limits on the extract path. A remote, unauthenticated...

CVE-2026-50271: Allocation of Resources Without Limits or Throttling

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 DDTRACEBAGGAGEMAXITEMS or DDTRACEBAGGAGEMAXBYTES limits on the extract path. A remote, unauthenticated...