{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-29181", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-04T14:44:00.713Z", "datePublished": "2026-04-07T20:29:13.933Z", "dateUpdated": "2026-08-12T12:04:42.448Z" }, "containers": { "cna": { "title": "OpenTelemetry-Go multi-value `baggage` header extraction causes excessive allocations (remote dos amplification)", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-770", "lang": "en", "description": "CWE-770: Allocation of Resources Without Limits or Throttling", "type": "CWE" } ] } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "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:H", "version": "3.1" } } ], "references": [ { "name": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-mh2q-q3fh-2475", "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-mh2q-q3fh-2475" } ], "affected": [ { "vendor": "open-telemetry", "product": "opentelemetry-go", "versions": [ { "version": ">= 1.36.0, < 1.41.0", "status": "affected" } ] } ], "providerMetadata": { "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-07T20:29:13.933Z" }, "descriptions": [ { "lang": "en", "value": "OpenTelemetry-Go is the Go implementation of OpenTelemetry. From 1.36.0 to 1.40.0, multi-value baggage: header extraction parses each header field-value independently and aggregates members across values. This allows an attacker to amplify cpu and allocations by sending many baggage: header lines, even when each individual value is within the 8192-byte per-value parse limit. This vulnerability is fixed in 1.41.0." } ], "source": { "advisory": "GHSA-mh2q-q3fh-2475", "discovery": "UNKNOWN" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-04-08T15:36:53.783712Z", "id": "CVE-2026-29181", "options": [ { "Exploitation": "poc" }, { "Automatable": "yes" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-08T15:37:02.444Z" } }, { "affected": [ { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:multicluster_engine:2.11::el9" ], "defaultStatus": "affected", "packageName": "multicluster-engine/hypershift-addon-rhel9-operator", "product": "multicluster engine for Kubernetes 2.11.0", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1780917881", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:multicluster_engine:2.8::el9" ], "defaultStatus": "affected", "packageName": "multicluster-engine/hypershift-addon-rhel9-operator", "product": "multicluster engine for Kubernetes 2.8", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1784738758", "versionType": "rpm" } ] }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:multicluster_engine" ], "defaultStatus": "unknown", "packageName": "multicluster-engine/assisted-service-9-rhel9", "product": "Multicluster Engine for Kubernetes", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:multicluster_engine" ], "defaultStatus": "affected", "packageName": "multicluster-engine/managedcluster-import-controller-rhel9", "product": "Multicluster Engine for Kubernetes", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:multicluster_engine" ], "defaultStatus": "affected", "packageName": "multicluster-engine/multicloud-manager-rhel9", "product": "Multicluster Engine for Kubernetes", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:multicluster_engine" ], "defaultStatus": "affected", "packageName": "multicluster-engine/placement-rhel9", "product": "Multicluster Engine for Kubernetes", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:multicluster_engine" ], "defaultStatus": "affected", "packageName": "multicluster-engine/registration-operator-rhel9", "product": "Multicluster Engine for Kubernetes", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:multicluster_engine" ], "defaultStatus": "affected", "packageName": "multicluster-engine/registration-rhel9", "product": "Multicluster Engine for Kubernetes", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:multicluster_engine" ], "defaultStatus": "affected", "packageName": "multicluster-engine/work-rhel9", "product": "Multicluster Engine for Kubernetes", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:acm:2" ], "defaultStatus": "unknown", "packageName": "rhacm2/multicluster-observability-rhel9-operator", "product": "Red Hat Advanced Cluster Management for Kubernetes 2", "vendor": "Red Hat" } ], "datePublic": "2026-04-07T20:29:13.933Z", "descriptions": [ { "lang": "en", "value": "A flaw was found in OpenTelemetry-Go, the Go implementation of OpenTelemetry. A remote attacker can exploit this vulnerability by sending multiple 'baggage' header lines. The system's independent parsing and aggregation of each header field-value across multiple values can lead to amplified CPU and memory allocations, resulting in a Denial of Service (DoS)." } ], "metrics": [ { "other": { "content": { "namespace": "https://access.redhat.com/security/updates/classification/", "value": "Important" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "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:H", "version": "3.1" }, "format": "CVSS" } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-770", "description": "Allocation of Resources Without Limits or Throttling", "lang": "en", "type": "CWE" } ] } ], "references": [ { "tags": [ "vdb-entry", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/security/cve/CVE-2026-29181" }, { "name": "RHBZ#2456252", "tags": [ "issue-tracking", "x_refsource_REDHAT" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456252" }, { "tags": [ "x_sadp-csaf-vex" ], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29181.json" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:25271" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:47735" } ], "solutions": [ { "lang": "en", "value": "RHSA-2026:25271: multicluster engine for Kubernetes 2.11" }, { "lang": "en", "value": "RHSA-2026:47735: multicluster engine for Kubernetes 2.8" } ], "timeline": [ { "lang": "en", "time": "2026-04-07T21:01:21.484Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-04-07T20:29:13.933Z", "value": "Made public." } ], "title": "github.com/open-telemetry/opentelemetry-go: OpenTelemetry-Go: Denial of Service via crafted multi-value baggage headers", "x_adpType": "supplier", "x_generator": { "engine": "sadp-cli 1.0.0" }, "providerMetadata": { "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-08-12T12:04:42.448Z" } } ] } }