CVE catalog
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 DD_TRACE_BA
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.79% · Oct 25, 2026
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 DD_TRACE_BAGGAGE_MAX_ITEMS or DD_TRACE_BAGGAGE_MAX_BYTES limits on the extract path. A remote, unauthenticated attacker can send a request whose baggage header contains an arbitrarily large number of comma-separated key-value pairs or a single very large value, causing unbounded CPU and memory consumption and enabling a remote denial of service against HTTP services with baggage propagation enabled. This issue is fixed in version 4.8.2.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Pip | ddtrace | Not reported | 4.8.2 | fixed |
| PyPI | ddtrace | Not reported | 4.8.2 | fixed |
| PyPI | ddtrace | Not reported | 4.8.2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Pip | ddtrace | pip | Not reported | 4.8.2 | Not reported | Not reported | Not reported |
| PyPI | ddtrace | PyPI | Not reported | 4.8.2 | Not reported | GHSA-MW54-J2V2-42HR | Not reported |
| PyPI | ddtrace | PyPI | Not reported | 4.8.2 | Not reported | PYSEC-2026-3461 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://github.com/DataDog/dd-trace-py/commit/9c80faa3dcfe238d008c3b3cd0b8e5dfef0aa4cd]
- [https://github.com/DataDog/dd-trace-py/pull/17926]
- [https://github.com/DataDog/dd-trace-py/releases/tag/v4.8.2]
- [https://github.com/DataDog/dd-trace-py/security/advisories/GHSA-mw54-j2v2-42hr]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-50271]
- [https://osv.dev/vulnerability/GHSA-mw54-j2v2-42hr]
[FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]