CVE-2026-109395
Ning compress-lzf before 1.2.0 Out-of-Bounds Memory Access via UnsafeChunkDecoder
- State
- Published
- Severity
- 8.8 High
- Published
- Oct 20, 2026
- Updated
- Oct 20, 2026
- Reserved
- Oct 12, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.8 High | 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 | VulnCheck |
| 3.1 | 9.1 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H | VulnCheck |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
compress-lzfning |
|
References
- https://github.com/ning/compress/pull/68patchissue-tracking
- https://github.com/ning/compress/commit/06bdc3744a96b736a7118891f403e44c664f108bpatch
- https://github.com/ning/compress/blob/compress-lzf-1.1.3/src/main/java/com/ning/compress/lzf/impl/UnsafeChunkDecoder.java#L104technical-description
- https://github.com/github/securitylab/discussions/970technical-description
- https://github.com/ning/compressproduct
- VulnCheck Advisory: Ning compress-lzf before 1.2.0 Out-of-Bounds Memory Access via UnsafeChunkDecoderthird-party-advisory
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.