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CVE-2026-109395— Ning compress-lzf before 1.2.0 Out-of-Bounds Memory Access via UnsafeChunkDecoder

Quick assessment

Affected
ning compress-lzf
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Ning compress-lzf 在 1.2.0 之前版本中，其基于 的 组件存在越界内存访问漏洞。该组件未能正确验证后向引用（back-references）和字面量序列（literal runs）。攻击者可向使用默认 的应用程序提供特制的 LZF 数据流，从而导致无关的 JVM 堆内存被泄露到解压输出中，或致使 JVM 崩溃。

CVSS 9.1 · Critical
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I. Basic Information for CVE-2026-109395

Vulnerability Information
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Vulnerability Title
Ning compress-lzf before 1.2.0 Out-of-Bounds Memory Access via UnsafeChunkDecoder
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ning compress-lzf 0 ~ 1.2.0 -

II. Public POCs for CVE-2026-109395

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III. Intelligence Information for CVE-2026-109395

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Other References for CVE-2026-109395 (6)

IV. Related Vulnerabilities

Same weakness: CWE-125

V. Comments for CVE-2026-109395

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