CVSS 4.0
8.2 highCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:NCVE-2025-66566
High (8.2). EPSS 0.6% chance of exploitation in the next 30 days. Fixed in at.yawk.lz4:lz4-java 1.10.1.
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.
Severity
- EPSS
- 0.6% chance of exploitation in the next 30 days; higher than 48% of CVEs (scores of 2026-10-31)
- CWE
- CWE-201
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-cmp6-m4wj-q63q | Maven | at.yawk.lz4:lz4-java | <1.10.1 | 1.10.1 |
| GHSA-cmp6-m4wj-q63q | Maven | org.lz4:lz4-java | <=1.8.1 | no fix published |
| GHSA-cmp6-m4wj-q63q | Maven | org.lz4:lz4-pure-java | <=1.8.1 | no fix published |
| GHSA-cmp6-m4wj-q63q | Maven | net.jpountz.lz4:lz4 | <=1.8.1 | no fix published |