{"id":"CVE-2026-109395","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-109395","summary":"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…","details":"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.","published":"2026-10-20T01:17:09.957","modified":"2026-10-20T01:17:09.957","cvss":{"score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/ning/compress/commit/06bdc3744a96b736a7118891f403e44c664f108b","label":"ning/compress@06bdc37"},"references":[{"type":"WEB","url":"https://github.com/github/securitylab/discussions/970"},{"type":"WEB","url":"https://github.com/ning/compress"},{"type":"WEB","url":"https://github.com/ning/compress/blob/compress-lzf-1.1.3/src/main/java/com/ning/compress/lzf/impl/UnsafeChunkDecoder.java#L104"},{"type":"WEB","url":"https://github.com/ning/compress/commit/06bdc3744a96b736a7118891f403e44c664f108b"},{"type":"WEB","url":"https://github.com/ning/compress/pull/68"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/ning-compress-lzf-before-1.2.0-out-of-bounds-memory-access-via-unsafechunkdecoder"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-10-20T01:17:09.957"}}