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.
Scores
CVSS v4
8.2
EPSS
0.0008
EPSS Percentile
23.0%
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-201
Status
published
Products (5)
at.yawk.lz4/lz4-java
0 - 1.10.1Maven
net.jpountz.lz4/lz4
0Maven
org.lz4/lz4-java
0Maven
org.lz4/lz4-pure-java
0Maven
yawkat/lz4-java
< 1.10.1
Published
Dec 05, 2025
Tracked Since
Feb 18, 2026