{"id":"CVE-2026-48504","revision":"ecfdacf9b0ea4b439170acb5fe7275ac","records":[{"revision":"ecfdacf9b0ea4b439170acb5fe7275ac","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-48504","aliases":[],"title":"OpenTelemetry Rust: Unbounded memory allocation in W3C Baggage propagation","description":"OpenTelemetry Rust is the Rust OpenTelemetry implementation. In 0.32.0 and earlier, BaggagePropagator::extract_with_context in opentelemetry_sdk did not enforce W3C Baggage size limits before parsing an inbound baggage header, so a large attacker-controlled header could cause unnecessary CPU work and short-lived heap allocations while parsing entries later discarded by the SDK's baggage storage limits. Services that accept untrusted inbound propagation headers may experience increased per-request resource usage when processing oversized baggage headers. This issue is fixed in version 0.32.1.","state":0,"publishedAt":"2026-07-17T20:13:45.686+00:00","modifiedAt":"2026-07-20T15:18:22.372+00:00","affected":[{"ecosystem":"Vendor product","name":"opentelemetry-rust","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"open-telemetry\",\n                    \"product\": \"opentelemetry-rust\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.32.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/open-telemetry/opentelemetry-rust/security/advisories/GHSA-w9wp-h8wv-79jx","https://github.com/open-telemetry/opentelemetry-rust/commit/a389ca6b3e416416bc8fc9b01cf6076b9182ed14"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-48504","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-48504","identifiers":["CVE-2026-48504"]},"retained":false,"historicalAffected":[]}],"coverage":[]}