CVE-2026-109395
CRITICAL
NVD
CVSS Score
9.1
Severity
CRITICAL
Published
Oct 20, 2026
Vendor
unknown
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.
References
- https://github.com/github/securitylab/discussions/970
- https://github.com/ning/compress
- https://github.com/ning/compress/blob/compress-lzf-1.1.3/src/main/java/com/ning/compress/lzf/impl/UnsafeChunkDecoder.java#L104
- https://github.com/ning/compress/commit/06bdc3744a96b736a7118891f403e44c664f108b
- https://github.com/ning/compress/pull/68