{"id":"CVE-2026-50273","summary":"Datadog .NET Tracer: Improper parsing of W3C baggage headers may lead to DoS","details":"Datadog .NET Tracer is a client library for Datadog APM for .NET applications. Prior to 3.43.0, 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 on extraction, allowing a remote unauthenticated attacker to send a baggage header with many comma-separated key-value pairs or one very large value and cause unbounded CPU and memory consumption in services with baggage propagation enabled. This issue is fixed in version 3.43.0.","aliases":["GHSA-38wr-vpc7-2mp4"],"modified":"2026-08-12T03:51:13.894346725Z","published":"2026-07-17T18:01:14.533Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-770"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50273.json"},"references":[{"type":"WEB","url":"https://github.com/DataDog/dd-trace-dotnet/releases/tag/v3.43.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50273.json"},{"type":"ADVISORY","url":"https://github.com/DataDog/dd-trace-dotnet/security/advisories/GHSA-38wr-vpc7-2mp4"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50273"},{"type":"FIX","url":"https://github.com/DataDog/dd-trace-dotnet/commit/38092e0d41a36decbe649e048e48ae1b1607292f"},{"type":"FIX","url":"https://github.com/DataDog/dd-trace-dotnet/pull/8555"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/datadog/dd-trace-dotnet","events":[{"introduced":"0"},{"fixed":"38092e0d41a36decbe649e048e48ae1b1607292f"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"3.43.0"}]}}],"versions":["v3.42.0","v3.41.0","v3.40.0","v3.39.0","v3.38.0","v3.37.0","v3.36.0","v3.35.0","v3.34.0","v3.33.0","v3.32.0","v3.31.0","v3.30.0","v3.29.0","v3.28.0","v3.27.0","v3.26.0","v3.25.0","v3.24.0","v3.23.0","v3.22.0","v3.21.0","v3.20.0","v3.19.0","v3.18.0","v3.17.0","v3.16.0","v3.15.0","v3.14.0","v3.13.0","v3.12.0","v3.11.0","v3.10.0","v3.9.0","v3.8.0","v3.7.0","v3.6.0","v3.5.0","v3.4.0","v2.49.0","v3.3.0","v3.2.0","v3.1.0-prerelease","v3.0.0-prerelease","v2.56.0","v2.55.0","v2.54.0","v2.53.0","v2.52.0","v2.51.0","v2.50.0","v2.48.0","v2.47.0","v2.46.0","v2.45.0","v2.44.0","v2.43.0","v2.42.0","v2.41.0","v2.40.0","v2.39.0","v2.38.0","v2.37.0","v2.36.0","v2.35.0","v2.34.0","v2.33.0","v2.32.0","v2.30.0","v2.31.0","v2.29.0","v2.28.0","v2.27.0","v2.22.0","v2.26.0","v2.25.0","v2.24.0","v2.23.0","v2.21.0","v2.20.0","v2.19.0","v2.18.0","v2.17.0","v2.16.0","v2.15.0","v2.14.0","v2.13.0","v2.9.0","v2.12.0","v2.11.0","v2.10.0","v2.8.0","v2.7.0","v2.6.0","v2.5.1","v2.5.0","v2.4.0","v2.3.0","v2.2.0","v2.1.1-profiler-beta1","v2.1.0","v2.0.1","v2.0.0-prerelease","v1.30.0","v1.29.0","v1.28.8","v1.28.2","v1.28.6","v1.28.5-prerelease","v1.28.3-prerelease","v1.28.0","v1.28.1-prerelease","v1.27.0","v1.26.3","v1.26.2","v1.26.1","v1.26.0","v1.25.0","v1.25.2-prerelease","v1.25.1-prerelease","v1.24.0","v1.23.0","v1.22.2-prerelease","v1.22.0","v1.21.2-prerelease","v1.21.1","v1.21.0","v1.20.1-prerelease","v1.20.0","v1.19.6-prerelease","v1.19.5","v1.19.3","v1.17.0","v1.19.2","v1.19.0","v1.18.4-prerelease","v1.18.3","v1.18.2","v1.18.1-prerelease","v1.18.0","v1.17.1-prerelease","v1.16.3-prerelease","v1.16.2","v1.16.1","v1.16.0","v1.15.1-prerelease","v1.15.0","v1.14.3-prerelease","v1.14.2","v1.14.1-prerelease","v1.14.0","v1.13.4-prerelease","v1.13.3-prerelease","v1.13.2","v1.13.1-prerelease","v1.13.0","v1.12.0","v1.11.1-prerelease","v1.11.0","v1.10.3-prerelease","v1.10.2-prerelease","v1.10.1-prerelease","v1.10.0","v1.9.1-prerelease","v1.9.0","v1.8.0","v1.7.0-beta1","v1.7.0","v1.6.2","v1.6.1","v1.6.0","v1.5.1","v1.5.0","v1.4.1","v1.4.0","v1.3.1","v1.3.0","v1.2.0","v1.1.0","v1.0.0","v0.8.2-beta","v0.8.1-beta","v0.8.0-beta","v0.7.1-beta","v0.7.0-beta","v0.6.0-beta","v0.5.2-beta","v0.5.1-beta","v0.5.0-beta","v0.4.1-beta","v0.4.0-beta","v0.3.2-beta","v0.3.1-beta","v0.3.0-beta","v0.2.4-alpha","v0.2.2","v0.2.0","v0.1.3","v0.1.2","v0.1.1","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50273.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}