{"id":"CVE-2026-106450","published":"2026-10-06T20:17:27.037","lastModified":"2026-10-09T02:16:59.843","description":"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.","cvssScore":5.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cwes":["CWE-770"],"vendors":[],"products":[],"references":[{"url":"https://github.com/yawkat/lz4-java/commit/2acc0ec1ead226145c62a817c18c8ed49233a283","tags":[]},{"url":"https://github.com/yawkat/lz4-java/releases/tag/v1.11.4","tags":[]},{"url":"https://github.com/yawkat/lz4-java/security/advisories/GHSA-gm45-99xc-r7wv","tags":[]}],"exploitRefs":[{"url":"https://github.com/yawkat/lz4-java/commit/2acc0ec1ead226145c62a817c18c8ed49233a283","tags":[]},{"url":"https://github.com/yawkat/lz4-java/releases/tag/v1.11.4","tags":[]},{"url":"https://github.com/yawkat/lz4-java/security/advisories/GHSA-gm45-99xc-r7wv","tags":[]}],"hasPoc":true,"ai":null}