VYPR
High severityOSV Advisory· Published Dec 5, 2025· Updated Apr 15, 2026

CVE-2025-66566

CVE-2025-66566

Description

yawkat LZ4 Java provides LZ4 compression for Java. Insufficient clearing of the output buffer in Java-based decompressor implementations in lz4-java 1.10.0 and earlier allows remote attackers to read previous buffer contents via crafted compressed input. In applications where the output buffer is reused without being cleared, this may lead to disclosure of sensitive data. JNI-based implementations are not affected. This vulnerability is fixed in 1.10.1.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
at.yawk.lz4:lz4-javaMaven
< 1.10.11.10.1
org.lz4:lz4-javaMaven
<= 1.8.1
org.lz4:lz4-pure-javaMaven
<= 1.8.1
net.jpountz.lz4:lz4Maven
<= 1.8.1

Affected products

97

Patches

Vulnerability mechanics

References

4

News mentions

0

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