CVE-2026-106453

yawkat LZ4 Java: LZ4DecompressorWithLength allocates the unvalidated size from the 4-byte length header, so a 5-byte input triggers a 1 GiB allocation and OutOfMemoryError

Details

yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.2, LZ4DecompressorWithLength uses getDecompressedLength to trust the four-byte decompressed-length header before validating the compressed input, allowing a five-byte attacker-supplied input whose header declares a large output size to request up to approximately 2 GiB and exhaust the JVM heap. Convenience overloads backed by LZ4FastDecompressor or LZ4SafeDecompressor allocate the untrusted size, while overloads that write to a caller-provided destination buffer are not affected because the caller controls the destination size. This issue is fixed in version 1.11.2.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-789"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106453.json"
}

References

Affected packages

Git / github.com/yawkat/lz4-java

Affected ranges

Type

GIT

Repo

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

Events

Introduced

Fixed

0569f2e80433ac67f89616364a8f584ec3b20c45

Fixed

6492ce5aca6bd03ff9e08ee18a2beb94c431371a

Database specific

Show details

{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.11.2"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "6492ce5aca6bd03ff9e08ee18a2beb94c431371a"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v1.11.2",
            "range":  [
                {
                    "fixed":  "0569f2e80433ac67f89616364a8f584ec3b20c45"
                }
            ],
            "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

v1.11.1

v1.9.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-106453.json"