{"id":"CVE-2026-50272","aliases":["GHSA-wxqq-gcq8-c443"],"url":"https://o3.security/vulnerability/CVE-2026-50272","summary":"dd-trace: Improper parsing of W3C baggage headers may lead to DoS","details":"dd-trace is the Datadog APM client for Node.js. Prior to 5.100.0, W3C baggage propagation in packages/dd-trace/src/baggage.js and packages/dd-trace/src/opentracing/propagation/text_map.js parsed incoming baggage HTTP headers without enforcing DD_TRACE_BAGGAGE_MAX_ITEMS or DD_TRACE_BAGGAGE_MAX_BYTES on extraction. 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 any HTTP service with baggage propagation enabled. This issue is fixed in version 5.100.0.","published":"2026-07-17T20:28:21.250Z","modified":"2026-08-12T03:51:16.084952788Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.00793,"percentile":0.53815,"asOf":"2026-08-31"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"dd-trace","fixedVersion":"5.100.0"}],"fix":{"url":"https://github.com/DataDog/dd-trace-js/commit/a7d4c0da05f67cde05a99272b725a317c461d0e6","label":"DataDog/dd-trace-js@a7d4c0d"},"references":[{"type":"WEB","url":"https://github.com/DataDog/dd-trace-js/releases/tag/v5.100.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50272.json"},{"type":"ADVISORY","url":"https://github.com/DataDog/dd-trace-js/security/advisories/GHSA-wxqq-gcq8-c443"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50272"},{"type":"FIX","url":"https://github.com/DataDog/dd-trace-js/commit/a7d4c0da05f67cde05a99272b725a317c461d0e6"},{"type":"FIX","url":"https://github.com/DataDog/dd-trace-js/pull/8255"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:16.084952788Z"}}