CVE-2026-106453

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Source
https://cve.org/CVERecord?id=CVE-2026-106453
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-106453.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-106453
Aliases
Downstream
Published
2026-10-06T19:54:04Z
Modified
2026-10-07T10:45:42Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
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
0 Unknown introduced commit / All previous commits are affected
Fixed
0569f2e80433ac67f89616364a8f584ec3b20c45
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.11.2"
        }
    ],
    "source": "AFFECTED_FIELD"
}

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"