CVE-2026-109395 PUBLISHED

Ning compress-lzf before 1.2.0 Out-of-Bounds Memory Access via UnsafeChunkDecoder

Assigner: VulnCheck
Reserved: 12.10.2026 Published: 20.10.2026 Updated: 20.10.2026

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.

CVSS 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
CVSS Score: 8.8

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CVSS Score: 9.1

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	ning
Product	compress-lzf
Versions	Default: unaffected affected from 0 to 1.2.0 (excl.)

CVE-2026-109395 PUBLISHED

Ning compress-lzf before 1.2.0 Out-of-Bounds Memory Access via UnsafeChunkDecoder

Metrics

Product Status

Credits

References

Problem Types