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{"bugzilla": {"description": "github.com/shamaton/msgpack: msgpack: Denial of Service via truncated fixext data", "id": "2451851", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451851"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-805", "details": ["A flaw was found in the msgpack decoder. A remote attacker could send specially crafted, truncated fixext data to an application using the msgpack library. This improper input validation can lead to an out-of-bounds read and a runtime panic, resulting in a denial of service (DoS) attack against the application."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-32284", "package_state": [{"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Fix deferred", "package_name": "openshift-logging/cluster-logging-operator-bundle", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Fix deferred", "package_name": "openshift-logging/cluster-logging-rhel9-operator", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Fix deferred", "package_name": "openshift-logging/eventrouter-rhel9", 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{"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-workbench-jupyter-tensorflow-cuda-py312-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-workbench-jupyter-tensorflow-rocm-py312-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-workbench-jupyter-trustyai-cpu-py312-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Fix deferred", "package_name": "quay/quay-rhel8", "product_name": "Red Hat Quay 3"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Fix deferred", "package_name": "quay/quay-rhel9", "product_name": "Red Hat Quay 3"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Fix deferred", "package_name": "satellite/iop-advisor-engine-rhel9", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Fix deferred", "package_name": "satellite/iop-insights-engine-rhel9", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Fix deferred", "package_name": "satellite/iop-puptoo-rhel9", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Fix deferred", "package_name": "satellite/iop-vulnerability-engine-rhel9", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Fix deferred", "package_name": "satellite/iop-yuptoo-rhel9", "product_name": "Red Hat Satellite 6"}], "public_date": "2026-03-26T19:40:51Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-32284\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-32284\nhttps://github.com/golang/vulndb/issues/4513\nhttps://github.com/shamaton/msgpack/issues/59\nhttps://pkg.go.dev/vuln/GO-2026-4513"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "github.com/shamaton/msgpack", "source": "cna", "vendor": "github.com/shamaton/msgpack"}, "product": "msgpack", "vendor": "shamaton"}], "analysis": {"en": {"generated_at": "2026-03-30T16:27:44.259560+00:00", "value": {"mitigation_remediation": ["Monitor the shamaton/msgpack GitHub repository for a patch or issue fix.", "Avoid processing untrusted MsgPack data or isolate decoding operations behind a sandbox or hot\u2011standby process to contain potential crashes.", "When an updated version is released, upgrade shamaton/msgpack to the fixed release."], "summary": {"action": "Patch", "impact": "Denial of Service via runtime panic caused by buffer overread"}, "threat_synthesis": {"affected_systems": "Affected products include shamaton/msgpack v2, shamaton/msgpack v3, and the core shamaton/msgpack repository. No specific version numbers are enumerated in the CNA data, so all releases that contain the vulnerable decoder must be considered potentially impacted until a fix is released.", "description_and_impact": "The msgpack decoder in shamaton/msgpack fails to validate the input buffer length when processing truncated fixext data (format codes 0xd4\u20110xd8). This oversight causes an out\u2011of\u2011bounds read that triggers a runtime panic, resulting in a denial of service. The vulnerability, identified as a buffer overread (CWE\u2011805), allows an attacker to disrupt services by supplying malformed MsgPack payloads.", "risk_and_exploitability": "The CVSS score of 7.5 indicates high severity, while the EPSS value of less than 1% suggests a low probability of exploitation in the wild. The vulnerability is not listed in the CISA KEV catalog. Attackers would need to supply crafted MsgPack data to the vulnerable decoder, which is likely achievable via public network interfaces or third\u2011party integrations. Once triggered, the panic causes the process to terminate, leading to a denial of service for affected systems."}}}}, "created": "2026-03-27T08:32:26.518740+00:00", "updated": "2026-03-30T20:57:34.616622+00:00", "vendors": ["shamaton", "shamaton$PRODUCT$msgpack"]}