{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-106453", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-06T16:49:40.591Z", "datePublished": "2026-10-06T19:54:04.124Z", "dateUpdated": "2026-10-06T19:54:04.124Z"}, "containers": {"cna": {"title": "yawkat LZ4 Java: LZ4DecompressorWithLength allocates the unvalidated size from the 4-byte length header, so a 5-byte input triggers a 1 GiB allocation and OutOfMemoryError", "problemTypes": [{"descriptions": [{"cweId": "CWE-789", "lang": "en", "description": "CWE-789: Memory Allocation with Excessive Size Value", "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-6cx8-rjf8-pr8g", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/yawkat/lz4-java/security/advisories/GHSA-6cx8-rjf8-pr8g"}, {"name": "https://github.com/yawkat/lz4-java/commit/6492ce5aca6bd03ff9e08ee18a2beb94c431371a", "tags": ["x_refsource_MISC"], "url": "https://github.com/yawkat/lz4-java/commit/6492ce5aca6bd03ff9e08ee18a2beb94c431371a"}, {"name": "https://github.com/yawkat/lz4-java/releases/tag/v1.11.2", "tags": ["x_refsource_MISC"], "url": "https://github.com/yawkat/lz4-java/releases/tag/v1.11.2"}], "affected": [{"vendor": "yawkat", "product": "lz4-java", "versions": [{"version": "< 1.11.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-06T19:54:04.124Z"}, "descriptions": [{"lang": "en", "value": "yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.2, LZ4DecompressorWithLength uses getDecompressedLength to trust the four-byte decompressed-length header before validating the compressed input, allowing a five-byte attacker-supplied input whose header declares a large output size to request up to approximately 2 GiB and exhaust the JVM heap. Convenience overloads backed by LZ4FastDecompressor or LZ4SafeDecompressor allocate the untrusted size, while overloads that write to a caller-provided destination buffer are not affected because the caller controls the destination size. This issue is fixed in version 1.11.2."}], "source": {"advisory": "GHSA-6cx8-rjf8-pr8g", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "lz4-java", "vendor": "yawkat", "versions": [{"status": "affected", "version": "< 1.11.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.2, LZ4DecompressorWithLength uses getDecompressedLength to trust the four-byte decompressed-length header before validating the compressed input, allowing a five-byte attacker-supplied input whose header declares a large output size to request up to approximately 2 GiB and exhaust the JVM heap. Convenience overloads backed by LZ4FastDecompressor or LZ4SafeDecompressor allocate the untrusted size, while overloads that write to a caller-provided destination buffer are not affected because the caller controls the destination size. This issue is fixed in version 1.11.2."}], "id": "CVE-2026-106453", "lastModified": "2026-10-06T20:17:27.457", "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": "2026-10-06T20:17:27.457", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/yawkat/lz4-java/commit/6492ce5aca6bd03ff9e08ee18a2beb94c431371a"}, {"source": "security-advisories@github.com", "url": "https://github.com/yawkat/lz4-java/releases/tag/v1.11.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/yawkat/lz4-java/security/advisories/GHSA-6cx8-rjf8-pr8g"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-789"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.11.2)"}}], "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": "2026-10-07T00:15:06.737930+00:00", "updated": "2026-10-07T01:15:09.124542+00:00", "vendors": ["yawkat", "yawkat$PRODUCT$lz4-java"]}