# CVE-2026-50276: dd-trace-rb: Improper parsing of W3C baggage headers may lead to DoS

> CVE-2026-50276: dd-trace-rb: Improper parsing of W3C baggage headers may lead to DoS. CVSS 7.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-50276
Last updated: 2026-09-25T14:10:13Z

- Published: 2026-09-14 17:04 UTC · Updated: 2026-09-25 14:10 UTC · Assigner: GitHub\_M
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS: 0.79%, 56th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-770

## Description

dd-trace-rb is Datadog's client library for Ruby. Prior to 2.32.0, W3C baggage extraction does not enforce DD\_TRACE\_BAGGAGE\_MAX\_ITEMS, which defaults to 64, or DD\_TRACE\_BAGGAGE\_MAX\_BYTES, which defaults to 8192, although those limits apply during baggage injection. A remote unauthenticated attacker can send a baggage HTTP header containing many comma-separated key-value pairs or a single very large value. The extraction path allocates entries while parsing the attacker-controlled header on every request, causing unbounded CPU and memory consumption in an HTTP service where the baggage propagation style is enabled, which is the default for most affected tracers. This can cause denial of service. This issue is fixed in version 2.32.0.

## Affected vendors and products

- DataDog: dd-trace-rb

## Tracked companies

- [Datadog](https://rewindex.com/company/datadog.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-50276)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-50276)
- [https://github.com/DataDog/dd-trace-rb/commit/361947090214488778ac4f144e219426ffcf92e6](https://github.com/DataDog/dd-trace-rb/commit/361947090214488778ac4f144e219426ffcf92e6)
- [https://github.com/DataDog/dd-trace-rb/pull/5672](https://github.com/DataDog/dd-trace-rb/pull/5672)
- [https://github.com/DataDog/dd-trace-rb/releases/tag/v2.32.0](https://github.com/DataDog/dd-trace-rb/releases/tag/v2.32.0)
- [https://github.com/DataDog/dd-trace-rb/security/advisories/GHSA-p5f6-rccc-jv98](https://github.com/DataDog/dd-trace-rb/security/advisories/GHSA-p5f6-rccc-jv98)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-50276 · Markdown: https://rewindex.com/cve/CVE-2026-50276.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-50276 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:11:18.663Z