{"id":"CVE-2026-106450","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-106450","generatedAt":"2026-10-28T04:18:06.047Z","title":"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…","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.","published":"2026-10-06T20:17:27.000Z","lastModified":"2026-10-09T02:17:00.000Z","status":"Awaiting Analysis","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},"cwe":["CWE-770"],"affected":[],"epss":{"score":0.00454,"percentile":0.39216,"date":"2026-10-27","history":[{"date":"2026-10-07","score":0.00371,"percentile":0.28955}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.45%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-06T20:17:27.000Z","detail":{"score":"5.3","severity":"MEDIUM","publishedAt":"2026-10-06T20:17:27.037Z"},"summary":"New CVE, medium severity (CVSS 5.3)."}],"references":[{"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","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-106450","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}