{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-106450", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-06T16:49:40.591Z", "datePublished": "2026-10-06T19:48:40.092Z", "dateUpdated": "2026-10-06T19:48:40.092Z"}, "containers": {"cna": {"title": "yawkat LZ4 Java: LZ4FrameInputStream reallocates block buffers for every frame, allowing CPU and GC amplification from small inputs", "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": "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/yawkat/lz4-java/security/advisories/GHSA-gm45-99xc-r7wv", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/yawkat/lz4-java/security/advisories/GHSA-gm45-99xc-r7wv"}, {"name": "https://github.com/yawkat/lz4-java/commit/2acc0ec1ead226145c62a817c18c8ed49233a283", "tags": ["x_refsource_MISC"], "url": "https://github.com/yawkat/lz4-java/commit/2acc0ec1ead226145c62a817c18c8ed49233a283"}, {"name": "https://github.com/yawkat/lz4-java/releases/tag/v1.11.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/yawkat/lz4-java/releases/tag/v1.11.4"}], "affected": [{"vendor": "yawkat", "product": "lz4-java", "versions": [{"version": "< 1.11.4", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-06T19:48:40.092Z"}, "descriptions": [{"lang": "en", "value": "yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4FrameInputStream readHeader() allocates two new 4 MiB block buffers whenever a maximum-block-size frame header is read, and the default concatenated-frame mode allows attacker-controlled streams containing many minimal empty frames to trigger roughly 8 MiB of allocation for every 11 input bytes. The stream produces no decompressed output while consuming CPU and garbage-collection time, so decompressed-size limits do not mitigate the issue; readSingleFrame mode is not affected. This issue is fixed in version 1.11.4."}], "source": {"advisory": "GHSA-gm45-99xc-r7wv", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "lz4-java", "vendor": "yawkat", "versions": [{"status": "affected", "version": "< 1.11.4"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4FrameInputStream readHeader() allocates two new 4 MiB block buffers whenever a maximum-block-size frame header is read, and the default concatenated-frame mode allows attacker-controlled streams containing many minimal empty frames to trigger roughly 8 MiB of allocation for every 11 input bytes. The stream produces no decompressed output while consuming CPU and garbage-collection time, so decompressed-size limits do not mitigate the issue; readSingleFrame mode is not affected. This issue is fixed in version 1.11.4."}], "id": "CVE-2026-106450", "lastModified": "2026-10-07T13:58:29.527", "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": "2026-10-06T20:17:27.037", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/yawkat/lz4-java/commit/2acc0ec1ead226145c62a817c18c8ed49233a283"}, {"source": "security-advisories@github.com", "url": "https://github.com/yawkat/lz4-java/releases/tag/v1.11.4"}, {"source": "security-advisories@github.com", "url": "https://github.com/yawkat/lz4-java/security/advisories/GHSA-gm45-99xc-r7wv"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{"bugzilla": {"description": "org.lz4/lz4-java: lz4-java: Denial of Service via excessive memory allocation from crafted compressed streams", "id": "2547135", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2547135"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-770", "details": ["A flaw was found in lz4-java. By supplying a specially crafted stream containing many small frame headers, a remote attacker can trigger disproportionate memory allocations during decompression. This excessive allocation consumes substantial memory and processing resources, potentially leading to a Denial of Service (DoS)."], "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-2026-106450", "package_state": [{"cpe": "cpe:/a:redhat:camel_spring_boot:4", "fix_state": "Fix deferred", "package_name": "lz4-java", "product_name": "Red Hat build of Apache Camel for Spring Boot 4"}, {"cpe": "cpe:/a:redhat:debezium:3", "fix_state": "Fix deferred", "package_name": "lz4-java", "product_name": "Red Hat build of Debezium 3"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "jmc", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:jboss_fuse:7", "fix_state": "Out of support scope", "package_name": "lz4-java", "product_name": "Red Hat Fuse 7"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:8", "fix_state": "Fix deferred", "package_name": "lz4-java", "product_name": "Red Hat JBoss Enterprise Application Platform 8"}, {"cpe": "cpe:/a:redhat:jbosseapxp", "fix_state": "Fix deferred", "package_name": "lz4-java", "product_name": "Red Hat JBoss Enterprise Application Platform Expansion Pack"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-spark-operator-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-th06-cpu-torch210-py312-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-th06-cuda130-torch210-py312-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-th06-rocm64-torch291-py312-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-th-torch-cpu-py312-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-th-torch-cuda-py312-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}], "public_date": "2026-10-06T19:48:40Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-106450\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-106450\nhttps://github.com/yawkat/lz4-java/commit/2acc0ec1ead226145c62a817c18c8ed49233a283\nhttps://github.com/yawkat/lz4-java/releases/tag/v1.11.4\nhttps://github.com/yawkat/lz4-java/security/advisories/GHSA-gm45-99xc-r7wv"], "statement": "Red Hat Product Security rates this vulnerability as having a Moderate severity because the impact is limited to denial of service through memory exhaustion and CPU starvation, with no compromise of system confidentiality or integrity. Exploitation requires an application to process untrusted compressed payloads from external sources. In typical Red Hat deployments, this library is primarily utilized within authenticated or internal data processing pipelines, restricting exposure.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.11.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "lz4-java", "source": "cna", "vendor": "yawkat"}, "product": "lz4-java", "vendor": "yawkat"}], "created": "2026-10-07T00:15:06.738542+00:00", "updated": "2026-10-07T01:15:09.125629+00:00", "vendors": ["yawkat", "yawkat$PRODUCT$lz4-java"]}