Vulnerability · Published Sep 14, 2026 · Assigned by GitHub_M
CVE-2026-50276dd-trace-rb: Improper parsing of W3C baggage headers may lead to DoS
High 7.5
In plain English
A high-severity resource allocation without limits in dd-trace-rb from DataDog. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| RubyGems | datadog | 2.32.0 | GHSA-p5f6-rccc-jv98 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| DataDog | dd-trace-rb | < 2.32.0 |
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/DataDog/dd-trace-rb/security/advisories/GHSA-p5f6-rccc-jv98 x_refsource_CONFIRM
- https://github.com/DataDog/dd-trace-rb/pull/5672 x_refsource_MISC
- https://github.com/DataDog/dd-trace-rb/commit/361947090214488778ac4f144e219426ffcf92e6 x_refsource_MISC
- https://github.com/DataDog/dd-trace-rb/releases/tag/v2.32.0 x_refsource_MISC