CVE Watch6 oct 2026

CVE-2026-106452

yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.2, net.jpountz.lz4.LZ4BlockInputStream refill() validates that the compress

CVSS

5.3

Medio

EPSS

0.4%

p30

KEV

—

Exploit Today

0-100

Publicado: 6 oct 2026 · Última mod.: 6 oct 2026 · CWE-789

EPSS · 30d

0.4%EPSS · 30 días0.4%

2026-10-072026-10-23

Descripción técnica

yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.2, net.jpountz.lz4.LZ4BlockInputStream refill() validates that the compressedLen field in a legacy LZ4Block header is nonnegative but allocates a compressed-input buffer of that attacker-controlled size before reading payload data, allowing a header-only stream to request a near-2 GiB allocation and exhaust the JVM heap. Canonical writers emit raw blocks when compression is not smaller than the original block, but vulnerable readers accept non-canonical oversized compressed blocks. This issue is fixed in version 1.11.2.

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