CVE-2026-59949

yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.1, JNI-backed XXHash implementations fail to validate the byte array object and the off and len arguments in XXHashFactory.nativeInstance().hash32().hash(), XXHashFactory.nativeInstance().hash64().hash(), XXHashFactory.nativeInstance().newStreamingHash32().update(), and XXHashFactory.nativeInstance().newStreamingHash64().update(), allowing null arrays or oversized ranges to reach native code, read outside the Java array, and fatally terminate the JVM. This issue is fixed in version 1.11.1.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-476"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59949.json"
}

References

Affected packages

Git / github.com/yawkat/lz4-java

Affected ranges

Type

GIT

Repo

https://github.com/yawkat/lz4-java

Events

Introduced

Fixed

dbd86d04b8dd716e1c2bc626be54189997d910da

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "1.11.1"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "1.11.1"
                }
            ],
            "source": "DESCRIPTION"
        },
        {
            "range": [
                {
                    "fixed": "dbd86d04b8dd716e1c2bc626be54189997d910da"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "v1.11.1",
            "range": [
                {
                    "fixed": "dbd86d04b8dd716e1c2bc626be54189997d910da"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

1.*

1.0.0

1.2.0

1.3.0

1.4.0

1.5.0

1.6.0

1.7.0

1.8.0

v1.*

v1.10.0

v1.10.1

v1.10.2

v1.10.3

v1.10.4

v1.11.0

v1.9.0

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-59949.json"