{"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"}}}}