CVE-2026-109395
Ning compress-lzf before 1.2.0 Out-of-Bounds Memory Access via UnsafeChunkDecoder
CVSS Score
9.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-125 |
| Vendor | ning |
| Product | compress-lzf |
| Published | Oct 20, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
Affected Versions
ning / compress-lzf
0 < 1.2.0
References
github.com: https://github.com/ning/compress/pull/68 github.com: https://github.com/ning/compress/commit/06bdc3744a96b736a7118891f403e44c664f108b github.com: https://github.com/ning/compress/blob/compress-lzf-1.1.3/src/main/java/com/ning/compress/lzf/impl/UnsafeChunkDecoder.java#L104 github.com: https://github.com/github/securitylab/discussions/970 github.com: https://github.com/ning/compress vulncheck.com: https://www.vulncheck.com/advisories/ning-compress-lzf-before-1.2.0-out-of-bounds-memory-access-via-unsafechunkdecoder
Credits
Marcono1234