{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-46384", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-13T19:53:47.922Z", "datePublished": "2026-05-29T19:58:21.535Z", "dateUpdated": "2026-09-09T12:04:43.443Z" }, "containers": { "cna": { "title": "iskorotkov/avro: Integer Overflow in Avro Decoder", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-190", "lang": "en", "description": "CWE-190: Integer Overflow or Wraparound", "type": "CWE" } ] } ], "metrics": [ { "cvssV4_0": { "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0" } } ], "references": [ { "name": "https://github.com/iskorotkov/avro/security/advisories/GHSA-mc57-h6j3-3hmv", "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/iskorotkov/avro/security/advisories/GHSA-mc57-h6j3-3hmv" } ], "affected": [ { "vendor": "iskorotkov", "product": "avro", "versions": [ { "version": "< 2.33.0", "status": "affected" } ] } ], "providerMetadata": { "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-29T19:58:21.535Z" }, "descriptions": [ { "lang": "en", "value": "iskorotkov/avro is a fast Go Avro codec. Prior to 2.33.0, several Avro decoder paths read attacker-controlled 64-bit values from the wire format and either narrowed them to platform-sized int before bounds-checking, or summed them with overflow-prone signed-int arithmetic. On 32-bit targets (GOARCH=386, arm, mips, wasm, etc.), the truncation paths can silently bypass byte-slice limits, select the wrong union branch, or hit the OCF negative-make panic via wrap. Three sub-issues are not 32-bit-specific: cumulative-size arithmetic overflow in arrayDecoder.Decode / mapDecoder.Decode / mapDecoderUnmarshaler.Decode (wraps at math.MaxInt64 on amd64 / arm64 and bypasses MaxSliceAllocSize / MaxMapAllocSize), math.MinInt negation in block-header handling, and make([]byte, size) with a negative size in OCF block reads — all three panic or bypass caps on any platform, giving an attacker a denial-of-service primitive there. This vulnerability is fixed in 2.33.0." } ], "source": { "advisory": "GHSA-mc57-h6j3-3hmv", "discovery": "UNKNOWN" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-05-29T21:35:10.446724Z", "id": "CVE-2026-46384", "options": [ { "Exploitation": "none" }, { "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": "2026-05-29T21:35:18.534Z" } }, { "affected": [ { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:cryostat:4::el9" ], "defaultStatus": "affected", "packageName": "cryostat/cryostat-storage-rhel9", "product": "Cryostat 4 on RHEL 9", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "4.2.0-19", "versionType": "rpm" } ] }, { "collectionURL": 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"multicluster-globalhub/multicluster-globalhub-grafana-rhel9", "product": "Multicluster Global Hub 1.7.0", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1784906628", "versionType": "rpm" }, { "lessThan": "*", "status": "unaffected", "version": "1785442872", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:acm:2.11::el9" ], "defaultStatus": "affected", "packageName": "rhacm2/acm-grafana-rhel9", "product": "Red Hat Advanced Cluster Management for Kubernetes 2.11", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1783578847", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:acm:2.13::el9" ], "defaultStatus": "affected", "packageName": "rhacm2/acm-grafana-rhel9", "product": "Red Hat Advanced Cluster Management for Kubernetes 2.13", "vendor": "Red Hat", 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"cpe:/a:redhat:multicluster_globalhub:1.5::el9" ], "defaultStatus": "affected", "packageName": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9", "product": "Red Hat multicluster global hub 1.5.3", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1784562060", "versionType": "rpm" } ] }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/o:redhat:enterprise_linux:10" ], "defaultStatus": "unaffected", "packageName": "grafana", "product": "Red Hat Enterprise Linux 10", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/o:redhat:enterprise_linux:8" ], "defaultStatus": "unaffected", "packageName": "grafana", "product": "Red Hat Enterprise Linux 8", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/o:redhat:enterprise_linux:9" ], "defaultStatus": "unaffected", "packageName": "grafana", "product": "Red Hat Enterprise Linux 9", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:hummingbird:1" ], "defaultStatus": "affected", "packageName": "opentelemetry-collector-contrib", "product": "Red Hat Hardened Images", "vendor": "Red Hat" } ], "datePublic": "2026-05-29T19:58:21.535Z", "descriptions": [ { "lang": "en", "value": "An integer overflow flaw was found in Go Avro in decoding logic. Multiple decoder paths performs unsafe integer conversions and overflow-prone arithmetic operations on attacker-controlled values from Avro payloads. A remote attacker during Avro decoder operations could exploit this issue using specially crafted Avro data to consume excessive resources by bypassing memory limits and triggering crashes leading to a denial of service in affected applications." } ], "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-190", "description": "Integer Overflow or Wraparound", "lang": "en", "type": "CWE" } ] } ], "references": [ { "tags": [ "vdb-entry", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/security/cve/CVE-2026-46384" }, { "name": "RHBZ#2483482", "tags": [ "issue-tracking", "x_refsource_REDHAT" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2483482" }, { "tags": [ "x_sadp-csaf-vex" ], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46384.json" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:48151" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:41030" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:44622" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:47149" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:53530" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:41064" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:30651" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:57191" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:60386" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:42852" } ], "solutions": [ { "lang": "en", "value": "RHSA-2026:48151: Cryostat 4 on RHEL 9" }, { "lang": "en", "value": "RHSA-2026:41030: Multicluster Global Hub 1.4.5" }, { "lang": "en", "value": "RHSA-2026:44622: Multicluster Global Hub 1.6.5" }, { "lang": "en", "value": "RHSA-2026:47149: Multicluster Global Hub 1.7.0" }, { "lang": "en", "value": "RHSA-2026:53530: Multicluster Global Hub 1.7.0" }, { "lang": "en", "value": "RHSA-2026:41064: Red Hat Advanced Cluster Management for Kubernetes 2.11" }, { "lang": "en", "value": "RHSA-2026:30651: Red Hat Advanced Cluster Management for Kubernetes 2.13" }, { "lang": "en", "value": "RHSA-2026:57191: Red Hat Advanced Cluster Management for Kubernetes 2.16" }, { "lang": "en", "value": "RHSA-2026:60386: Red Hat Advanced Cluster Management for Kubernetes 2.17" }, { "lang": "en", "value": "RHSA-2026:42852: Red Hat multicluster global hub 1.5.3" } ], "timeline": [ { "lang": "en", "time": "2026-05-29T21:02:03.061Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-05-29T19:58:21.535Z", "value": "Made public." } ], "title": "github.com/hamba/avro/v2: github.com/linkedin/goavro/v2: Integer Overflow in Avro Decoder", "workarounds": [ { "lang": "en", "value": "Red Hat is not aware of a practical temporary workaround that fully mitigates this issue or meets Red Hat Product Security's standards for usability, deployment, applicability, or stability. Customers are advised to apply the relevant security updates when they become available." } ], "x_adpType": "supplier", "x_generator": { "engine": "sadp-cli 1.0.0" }, "providerMetadata": { "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-09-09T12:04:43.443Z" } } ] } }