{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-46385", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-13T19:53:47.922Z", "datePublished": "2026-05-29T19:58:59.667Z", "dateUpdated": "2026-08-27T12:04:38.488Z" }, "containers": { "cna": { "title": "iskorotkov/avro: CPU Exhaustion in Avro Decoder", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-400", "lang": "en", "description": "CWE-400: Uncontrolled Resource Consumption", "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-w8j3-pq8g-8m7w", "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/iskorotkov/avro/security/advisories/GHSA-w8j3-pq8g-8m7w" } ], "affected": [ { "vendor": "iskorotkov", "product": "avro", "versions": [ { "version": "< 2.33.0", "status": "affected" } ] } ], "providerMetadata": { "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-29T19:58:59.667Z" }, "descriptions": [ { "lang": "en", "value": "iskorotkov/avro is a fast Go Avro codec. Prior to 2.33.0, the Avro array and map decoders looped over an attacker-controlled block-count value without checking the underlying reader's error state inside the loop body. Reader.ReadBlockHeader returns the count as a Go int, which is 64-bit on amd64 / arm64 targets — so a producer can declare a block of up to math.MaxInt64 (~9.2 × 10¹⁸) elements followed by EOF (or any truncated payload), and the decoder will attempt that many no-op iterations before propagating the error. The realistic ceiling is \"indefinite until the worker is killed externally\" — a single hostile payload pins a CPU core until the process is OOM-killed, deadline-cancelled, or terminated. Remote, unauthenticated denial-of-service. This vulnerability is fixed in 2.33.0." } ], "source": { "advisory": "GHSA-w8j3-pq8g-8m7w", "discovery": "UNKNOWN" } }, "adp": [ { "references": [ { "url": "https://github.com/iskorotkov/avro/security/advisories/GHSA-w8j3-pq8g-8m7w", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-06-01T16:22:43.598595Z", "id": "CVE-2026-46385", "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": "2026-06-01T16:36:20.424Z" } }, { "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": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:multicluster_globalhub:1.5::el9" ], "defaultStatus": "affected", "packageName": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9", "product": "Multicluster Global Hub 1.5.6", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1784562060", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:multicluster_globalhub:1.7::el9" ], "defaultStatus": "affected", "packageName": "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", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1782383730", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:acm:2.16::el9" ], "defaultStatus": "affected", "packageName": "rhacm2/acm-grafana-rhel9", "product": "Red Hat Advanced Cluster Management for Kubernetes 2.16", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1786908968", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:acm:2.17::el9" ], "defaultStatus": "affected", "packageName": "rhacm2/acm-grafana-rhel9", "product": "Red Hat Advanced Cluster Management for Kubernetes 2.17", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1787316467", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:multicluster_globalhub:1.4::el9" ], "defaultStatus": "affected", "packageName": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9", "product": "Red Hat multicluster global hub 1.4.2", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1784060681", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:multicluster_globalhub:1.6::el9" ], "defaultStatus": "affected", "packageName": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9", "product": "Red Hat multicluster global hub 1.6.0", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1784561376", "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": "2026-05-29T19:58:59.667Z", "descriptions": [ { "lang": "en", "value": "A flaw was found in the Avro array and map decoding logic in Go Avro. The decoder failed to properly stop processing after encountering read errors while iterating over attacker-controlled block-count values, leading to excessive resource consumption. A remote unauthenticated attacker could exploit this issue using specially crafted Avro payloads causing denial of service, where the affected system's CPU is consumed indefinitely until the process is terminated." } ], "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-835", "description": "Loop with Unreachable Exit Condition ('Infinite Loop')", "lang": "en", "type": "CWE" } ] } ], "references": [ { "tags": [ "vdb-entry", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/security/cve/CVE-2026-46385" }, { "name": "RHBZ#2483475", "tags": [ "issue-tracking", "x_refsource_REDHAT" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2483475" }, { "tags": [ "x_sadp-csaf-vex" ], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46385.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-2026:42852" }, { "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-2026:41030" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:44622" } ], "solutions": [ { "lang": "en", "value": "RHSA-2026:48151: Cryostat 4 on RHEL 9" }, { "lang": "en", "value": "RHSA-2026:42852: Multicluster Global Hub 1.5.6" }, { "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-2026:41030: Red Hat multicluster global hub 1.4.2" }, { "lang": "en", "value": "RHSA-2026:44622: Red Hat multicluster global hub 1.6.0" } ], "timeline": [ { "lang": "en", "time": "2026-05-29T21:01:37.087Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-05-29T19:58:59.667Z", "value": "Made public." } ], "title": "github.com/hamba/avro/v2: github.com/linkedin/goavro/v2: CPU Exhaustion in Avro Decoder via Unbounded Block-Count Iteration", "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": "2026-08-27T12:04:38.488Z" } } ] } }