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.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-cmp6-m4wj-q63q yawkat LZ4 Java has a possible information leak in Java safe decompressor
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 05 Dec 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 05 Dec 2025 18:15:00 +0000

Type Values Removed Values Added
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.
Title yawkat LZ4 Java has a possible information leak in Java safe decompressor
Weaknesses CWE-201
References
Metrics cvssV4_0

{'score': 8.2, 'vector': '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-12-05T18:27:32.797Z

Reserved: 2025-12-04T16:17:35.385Z

Link: CVE-2025-66566

cve-icon Vulnrichment

Updated: 2025-12-05T18:27:22.958Z

cve-icon NVD

Status : Received

Published: 2025-12-05T18:15:59.580

Modified: 2025-12-05T18:15:59.580

Link: CVE-2025-66566

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses