{"id":"CVE-2026-109395","aliases":["DEBIAN-CVE-2026-109395","EUVD-2026-104679","GHSA-7xjc-8h6q-2f5h","UBUNTU-CVE-2026-109395"],"status":"published","title":"Ning compress-lzf before 1.2.0 Out-of-Bounds Memory Access via UnsafeChunkDecoder","description":"Ning compress-lzf before 1.2.0 contains an out-of-bounds memory access vulnerability in the sun.misc.Unsafe based UnsafeChunkDecoder that fails to validate back-references and literal runs. Attackers can supply crafted LZF streams to applications using the default LZFDecoder to leak unrelated JVM heap memory into decompressed output or crash the JVM.","severity":{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00524,"percentile":0.44924,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-10-20T00:46:04Z","modified":"2026-10-28T20:16:19Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"compress-lzf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.4-1"]},{"source":"osv","ecosystem":"Debian:13","package":"compress-lzf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.4-1"]},{"source":"osv","ecosystem":"Debian:14","package":"compress-lzf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.4-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"compress-lzf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.3-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"compress-lzf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.3-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"compress-lzf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.4-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"compress-lzf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.4-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"compress-lzf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.4-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"compress-lzf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.4-1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"compress-lzf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.4-1","1.0.4-1build1"]}],"products":[{"vendor":"ning","product":"compress-lzf"}],"references":[{"url":"https://github.com/ning/compress/pull/68","tags":["patch","issue-tracking","fix","report"]},{"url":"https://github.com/ning/compress/commit/06bdc3744a96b736a7118891f403e44c664f108b","tags":["patch","fix"]},{"url":"https://github.com/ning/compress/blob/compress-lzf-1.1.3/src/main/java/com/ning/compress/lzf/impl/UnsafeChunkDecoder.java#L104","tags":["technical-description","article"]},{"url":"https://github.com/github/securitylab/discussions/970","tags":["technical-description","article"]},{"url":"https://github.com/ning/compress","tags":["product","package"]},{"url":"https://www.vulncheck.com/advisories/ning-compress-lzf-before-1.2.0-out-of-bounds-memory-access-via-unsafechunkdecoder","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109395","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-7xjc-8h6q-2f5h"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109395.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-109395","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-109395","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-109395","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-109395","title":"Ning compress-lzf before 1.2.0 Out-of-Bounds Memory Access via UnsafeChunkDecoder","description":"Ning compress-lzf before 1.2.0 contains an out-of-bounds memory access vulnerability in the sun.misc.Unsafe based UnsafeChunkDecoder that fails to validate back-references and literal runs. Attackers can supply crafted LZF streams to applications using the default LZFDecoder to leak unrelated JVM heap memory into decompressed output or crash the JVM.","status":"published","published":"2026-10-20T00:46:04.633Z","modified":"2026-10-20T14:29:50.505Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:20:11.24076Z"}],"euvd":[{"id":"EUVD-2026-104679","description":"Ning compress-lzf before 1.2.0 contains an out-of-bounds memory access vulnerability in the sun.misc.Unsafe based UnsafeChunkDecoder that fails to validate back-references and literal runs. Attackers can supply crafted LZF streams to applications using the default LZFDecoder to leak unrelated JVM heap memory into decompressed output or crash the JVM.","status":"published","published":"2026-10-20T00:46:04Z","modified":"2026-10-20T14:29:50Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T16:59:43.975979Z"}],"ghsa":[{"id":"GHSA-7xjc-8h6q-2f5h","title":"Ning compress-lzf before 1.2.0 contains an out-of-bounds memory access vulnerability in the sun...","description":"Ning compress-lzf before 1.2.0 contains an out-of-bounds memory access vulnerability in the sun.misc.Unsafe based UnsafeChunkDecoder that fails to validate back-references and literal runs. Attackers can supply crafted LZF streams to applications using the default LZFDecoder to leak unrelated JVM heap memory into decompressed output or crash the JVM.","status":"published","published":"2026-10-20T03:32:43Z","modified":"2026-10-20T03:33:03Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:14:02.928159Z"}],"nvd":[{"id":"CVE-2026-109395","description":"Ning compress-lzf before 1.2.0 contains an out-of-bounds memory access vulnerability in the sun.misc.Unsafe based UnsafeChunkDecoder that fails to validate back-references and literal runs. Attackers can supply crafted LZF streams to applications using the default LZFDecoder to leak unrelated JVM heap memory into decompressed output or crash the JVM.","status":"published","published":"2026-10-20T01:17:09.957Z","modified":"2026-10-20T20:06:37.15Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:13:00.83844Z"}],"osv":[{"id":"CVE-2026-109395","title":"Ning compress-lzf before 1.2.0 Out-of-Bounds Memory Access via UnsafeChunkDecoder","description":"Ning compress-lzf before 1.2.0 contains an out-of-bounds memory access vulnerability in the sun.misc.Unsafe based UnsafeChunkDecoder that fails to validate back-references and literal runs. Attackers can supply crafted LZF streams to applications using the default LZFDecoder to leak unrelated JVM heap memory into decompressed output or crash the JVM.","status":"published","published":"2026-10-20T00:46:04.633Z","modified":"2026-10-28T02:30:41.626280181Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:44:55.279797Z"},{"id":"DEBIAN-CVE-2026-109395","description":"Ning compress-lzf before 1.2.0 contains an out-of-bounds memory access vulnerability in the sun.misc.Unsafe based UnsafeChunkDecoder that fails to validate back-references and literal runs. Attackers can supply crafted LZF streams to applications using the default LZFDecoder to leak unrelated JVM heap memory into decompressed output or crash the JVM.","status":"published","published":"2026-10-20T01:17:09.957Z","modified":"2026-10-23T18:05:31.891662472Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"updated_at":"2026-11-02T15:45:49.381767Z"},{"id":"UBUNTU-CVE-2026-109395","description":"Ning compress-lzf before 1.2.0 contains an out-of-bounds memory access vulnerability in the sun.misc.Unsafe based UnsafeChunkDecoder that fails to validate back-references and literal runs. Attackers can supply crafted LZF streams to applications using the default LZFDecoder to leak unrelated JVM heap memory into decompressed output or crash the JVM.","status":"published","published":"2026-10-20T01:17:00Z","modified":"2026-10-28T20:16:19.547383344Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"},{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T16:55:59.130573Z"}]}}