CVE-2026-106452

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Source
https://cve.org/CVERecord?id=CVE-2026-106452
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-106452.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-106452
Aliases
Downstream
Published
2026-10-06T19:52:37Z
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: LZ4BlockInputStream allocates an unvalidated compressed length from the stream header
Details

yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.2, net.jpountz.lz4.LZ4BlockInputStream refill() validates that the compressedLen field in a legacy LZ4Block header is nonnegative but allocates a compressed-input buffer of that attacker-controlled size before reading payload data, allowing a header-only stream to request a near-2 GiB allocation and exhaust the JVM heap. Canonical writers emit raw blocks when compression is not smaller than the original block, but vulnerable readers accept non-canonical oversized compressed blocks. 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-2026-106452.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-2026-106452.json"