{"id":"CVE-2026-106450","title":"yawkat LZ4 Java provides LZ4 compression for Java","summary":"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-f…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-770"],"vendor":"yawkat","product":"lz4-java","affected":["lz4-java < 1.11.4"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T20:17:27.037","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-106450","references":[{"url":"https://github.com/yawkat/lz4-java/commit/2acc0ec1ead226145c62a817c18c8ed49233a283","label":"security-advisories@github.com"},{"url":"https://github.com/yawkat/lz4-java/releases/tag/v1.11.4","label":"security-advisories@github.com"},{"url":"https://github.com/yawkat/lz4-java/security/advisories/GHSA-gm45-99xc-r7wv","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-06T20:16:42.478Z","slug":"CVE-2026-106450","body":"## Overview\n\nyawkat 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}