{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-128086", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-11-12T21:24:51.131Z", "datePublished": "2026-11-13T18:54:15.661Z", "dateUpdated": "2026-11-13T18:54:15.661Z"}, "containers": {"cna": {"title": "OpenTelemetry-Go: Eager W3C baggage-property materialization causes bounded memory-allocation amplification", "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "lang": "en", "description": "CWE-400: Uncontrolled Resource Consumption", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-405", "lang": "en", "description": "CWE-405: Asymmetric Resource Consumption (Amplification)", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-rrfc-gjm9-cgrj", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-rrfc-gjm9-cgrj"}, {"name": "https://github.com/open-telemetry/opentelemetry-go/pull/9024", "tags": ["x_refsource_MISC"], "url": "https://github.com/open-telemetry/opentelemetry-go/pull/9024"}, {"name": "https://github.com/open-telemetry/opentelemetry-go/commit/f09d1de32f4ac7e5ef16394533721106b1a57b89", "tags": ["x_refsource_MISC"], "url": "https://github.com/open-telemetry/opentelemetry-go/commit/f09d1de32f4ac7e5ef16394533721106b1a57b89"}, {"name": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.47.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.47.0"}], "affected": [{"vendor": "open-telemetry", "product": "opentelemetry-go", "versions": [{"version": ">= 1.0.0-RC1, < 1.47.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-11-13T18:54:15.661Z"}, "descriptions": [{"lang": "en", "value": "OpenTelemetry-Go is the Go implementation of OpenTelemetry. From version 1.0.0-RC1 until version 1.47.0, baggage.Parse and propagation.Baggage.Extract eagerly materialize every W3C baggage property through parseMember, grow property slices, serialize members, and copy properties into internal/baggage.Item. A valid densely populated baggage header can therefore cause allocation traffic and retained memory disproportionate to its bounded input size. Remote impact requires baggage extraction to be enabled, attacker-controlled input to reach it, and extraction to run before authentication or on a public route; the evidence establishes increased allocation and garbage-collection pressure but not reliable process termination. This issue is fixed in version 1.47.0."}], "source": {"advisory": "GHSA-rrfc-gjm9-cgrj", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "opentelemetry-go", "vendor": "open-telemetry", "versions": [{"status": "affected", "version": ">= 1.0.0-RC1, < 1.47.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenTelemetry-Go is the Go implementation of OpenTelemetry. From version 1.0.0-RC1 until version 1.47.0, baggage.Parse and propagation.Baggage.Extract eagerly materialize every W3C baggage property through parseMember, grow property slices, serialize members, and copy properties into internal/baggage.Item. A valid densely populated baggage header can therefore cause allocation traffic and retained memory disproportionate to its bounded input size. Remote impact requires baggage extraction to be enabled, attacker-controlled input to reach it, and extraction to run before authentication or on a public route; the evidence establishes increased allocation and garbage-collection pressure but not reliable process termination. This issue is fixed in version 1.47.0."}], "id": "CVE-2026-128086", "lastModified": "2026-11-13T19:19:31.340", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-13T19:19:31.340", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/open-telemetry/opentelemetry-go/commit/f09d1de32f4ac7e5ef16394533721106b1a57b89"}, {"source": "security-advisories@github.com", "url": "https://github.com/open-telemetry/opentelemetry-go/pull/9024"}, {"source": "security-advisories@github.com", "url": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.47.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-rrfc-gjm9-cgrj"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-405"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.0.0-RC1,1.47.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "opentelemetry-go", "source": "cna", "vendor": "open-telemetry"}, "product": "opentelemetry-go", "vendor": "opentelemetry"}], "created": "2026-11-13T21:30:21.611814+00:00", "updated": "2026-11-13T21:30:21.611828+00:00", "vendors": ["opentelemetry", "opentelemetry$PRODUCT$opentelemetry-go"]}