# ddtrace (PyPI) vulnerabilities

3 known vulnerabilities (3 high), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: 4.16.3 (Nov 4, 2026): no advisory affects it
- Newest unaffected release: 4.16.3 (Nov 4, 2026), the latest release
- Weekly downloads: 11.3M
- Dependents: 68
- Releases: 500+ since 1.16.3 (Oct 23, 2023)
- Registry: https://pypi.org/project/ddtrace/
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-116589: 3.13.0 to 4.15.4 (4.15.5 is outside it)
- CVE-2026-116588: 1.16.3 to 3.19.8 (3.19.9 is outside it); 4.0.0 to 4.15.5 (4.15.6 is outside it)
- CVE-2026-50271: 1.16.3 to 4.8.1 (4.8.2 is outside it)

Older releases aren't stored, so the earliest spans may start sooner.

## Advisories (3)

### [CVE-2026-116589](https://cve.now/CVE-2026-116589): Datadog dd-trace-py: IAST instrumentation can lead to application DOS

- Severity: High 8.2
- Published: Oct 26, 2026
- Affected: from 3.13.0, fixed in 4.15.5.
- Fixed in 4.15.5 (released Oct 6, 2026, 20 days before disclosure).
- The latest release, 4.16.3, is not affected.

### [CVE-2026-116588](https://cve.now/CVE-2026-116588): Datadog dd-trace-py: ReDOS in URL query string obfuscation

- Severity: High 8.7
- Published: Oct 26, 2026
- Affected: from 1.5.0, fixed in 3.19.9; from 4.0.0, fixed in 4.15.6.
- Fixed in 3.19.9 (released Oct 9, 2026, 17 days before disclosure) and 4.15.6 (released Oct 8, 2026, 18 days before disclosure).
- The latest release, 4.16.3, is not affected.

### [CVE-2026-50271](https://cve.now/CVE-2026-50271): dd-trace-py: Improper parsing of W3C baggage headers may lead to DoS

- Severity: High 7.5
- Published: Jul 17, 2026
- Affected: fixed in 4.8.2.
- Fixed in 4.8.2 (released May 6, 2026, 72 days before disclosure).
- The latest release, 4.16.3, is not affected.

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