CVE-2026-106450

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-106450
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-106450.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-106450
Aliases
Downstream
Published
2026-10-06T19:48:40Z
Modified
2026-10-07T13:21:00Z
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: LZ4FrameInputStream reallocates block buffers for every frame, allowing CPU and GC amplification from small inputs
Details

yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4FrameInputStream readHeader() allocates two new 4 MiB block buffers whenever a maximum-block-size frame header is read, and the default concatenated-frame mode allows attacker-controlled streams containing many minimal empty frames to trigger roughly 8 MiB of allocation for every 11 input bytes. The stream produces no decompressed output while consuming CPU and garbage-collection time, so decompressed-size limits do not mitigate the issue; readSingleFrame mode is not affected. This issue is fixed in version 1.11.4.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106450.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
4af910bc99c2f021f0cd56f6ca7f7600f4dda4a0
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.11.4"
        }
    ],
    "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
v1.11.2
v1.11.3
v1.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-106450.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "214388248717931299923900274857980516335",
                "65683750676527707633078656054170255344",
                "118287103178809004985414128698616388518",
                "300637533127697537612035724601996989858",
                "266104950906479238541857316988367999351",
                "134728242984367791732063153507024217733",
                "42467283072344628588104348871426341262",
                "120304495577461616964057978192822068584",
                "241948005302004834692069803815921267754",
                "300772486054080233650511326870296722448",
                "199868925319664771762581168079999457280",
                "199852464834928763731943148423675137228",
                "5780372513503982885265799084234661786",
                "185404016909992595827221147264550945351",
                "26652769941461710058292728882523053930",
                "13075325095172813375000686650282311601",
                "269691371974919895669012905319974831748",
                "68119049062416810164251849865742483758",
                "118762952372007463797917670866819281951",
                "269126750384551754583012292750271610628",
                "173611378178514036441531353351102857178"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-106450-51af3d82",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/yawkat/lz4-java/commit/4af910bc99c2f021f0cd56f6ca7f7600f4dda4a0",
        "target": {
            "file": "src/test/net/jpountz/lz4/LZ4BlockStreamingTest.java"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "20082239809390668882048052815584052754",
            "length": 678
        },
        "id": "CVE-2026-106450-e30894f2",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/yawkat/lz4-java/commit/4af910bc99c2f021f0cd56f6ca7f7600f4dda4a0",
        "target": {
            "file": "src/test/net/jpountz/lz4/LZ4BlockStreamingTest.java",
            "function": "testAvailableAfterEmptyBlock"
        }
    }
]
vanir_signatures_modified 
"2026-10-07T13:21:00Z"