{"id":"CVE-2026-106451","title":"yawkat LZ4 Java provides LZ4 compression for Java","summary":"yawkat LZ4 Java provides LZ4 compression for Java. From 1.7.0 until 1.11.4, net.jpountz.util.Native.load() uses File.createTempFile to create an exclusive temporary .lck file but derives the native-library path by removing the suffix, th…","severity":"high","cvss":7.3,"cvssVector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","cwe":["CWE-367","CWE-377","CWE-379"],"vendor":"yawk","product":"at.yawk.lz4:lz4-java","affected":["at.yawk.lz4:lz4-java <= 1.11.3","org.lz4:lz4-java >= 1.7.0, <= 1.8.1"],"patched":["at.yawk.lz4:lz4-java 1.11.4"],"published":"2026-10-06","updated":"2026-10-07","sourceUpdated":"2026-10-07T19:17:32.463","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-106451","references":[{"url":"https://github.com/yawkat/lz4-java/commit/7a48b7f6b8099b9dab6541e4ac2ee0979dc55aa3","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-mcr4-qmvw-px4g","label":"security-advisories@github.com"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106451"},{"url":"https://github.com/advisories/GHSA-mcr4-qmvw-px4g"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106451.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-106451"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2547137"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-106451"}],"tags":["nvd","ghsa","maven","cve.org","csaf","vex","red-hat"],"aliases":["GHSA-mcr4-qmvw-px4g"],"ecosystem":"maven","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-07T18:25:34.130789Z"},"cvssSource":"cna","scores":{"cna":7.3,"vendor":7},"ingestedAt":"2026-10-06T20:16:42.477Z","epss":0.00108,"epssPercentile":0.01179,"slug":"CVE-2026-106451","body":"## Overview\n\nyawkat LZ4 Java provides LZ4 compression for Java. From 1.7.0 until 1.11.4, net.jpountz.util.Native.load() uses File.createTempFile to create an exclusive temporary .lck file but derives the native-library path by removing the suffix, then FileOutputStream opens that predictable path without exclusive creation, allowing another local user with access to the same shared temporary directory to create or replace the library file before System.load() uses it. Successful exploitation depends on shared-directory permissions, host protections, and winning the race, and can execute native code as the victim; hardened systems may instead cause library loading to fail and fall back to Java implementations. Configurations using a system library, a private java.io.tmpdir, or Java-only implementations are 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.\n\n## Package advisory (CVE-2026-106451)\n\nAffected packages:\n\n- `at.yawk.lz4:lz4-java <= 1.11.3`\n- `org.lz4:lz4-java >= 1.7.0, <= 1.8.1`\n\nPatched in:\n\n- `at.yawk.lz4:lz4-java 1.11.4`\n\nSource: https://github.com/advisories/GHSA-mcr4-qmvw-px4g\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat build of Apache Camel for Spring Boot 4, Red Hat build of Debezium 3, Red Hat Enterprise Linux 9, Red Hat Fuse 7, Red Hat JBoss Enterprise Application Platform 8, Red Hat JBoss Enterprise Application Platform Expansion Pack, … · no fix planned: Red Hat Fuse 7, Red Hat build of Apache Camel for Spring Boot 4, Red Hat build of Debezium 3, Red Hat Enterprise Linux 9, … · updated 2026-10-07 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106451.json)","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":40.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}