CVE-2026-87877

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Source
https://cve.org/CVERecord?id=CVE-2026-87877
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-87877.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-87877
Aliases
  • GHSA-2jw3-mg7f-vw4q
Downstream
Published
2026-09-09T14:32:45Z
Modified
2026-09-10T08:16:10Z
Severity
  • 7.0 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
zstd-jni 1.3.8-4 through 1.5.7-13 Use-After-Free via Setters Called After close()
Details

zstd-jni versions before 1.5.7-14 fail to validate closed state in setDict, setLongMax, setLevel and setRefMultipleDDicts methods of stream classes. Attackers can call these methods on closed streams to write through freed native pointers, corrupting unrelated objects or crashing the JVM.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-416"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87877.json"
}
References

Affected packages

Git / github.com/luben/zstd-jni

Affected ranges

Type
GIT
Repo
https://github.com/luben/zstd-jni
Events
Introduced
0830536d204f2944f4a124517aec80b5e5dc2647
Fixed
3216860eea289fbbae0b191c0a4fd8b72dad949c
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "1.3.8-4"
        },
        {
            "fixed": "1.5.7-14"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

1.*
1.4.4-4
b1.*
b1.5.5-9
c1.*
c1.5.2-5
v.*
v.1.3.8-9
v.1.5.5-5
v1.*
v1.3.8-4
v1.3.8-5
v1.3.8-6
v1.3.8-7
v1.3.8-8
v1.4.0-1
v1.4.1-1
v1.4.2-1
v1.4.3-1
v1.4.4-10
v1.4.4-11
v1.4.4-2
v1.4.4-3
v1.4.4-5
v1.4.4-7
v1.4.4-8
v1.4.4-9
v1.4.5-1
v1.4.5-10
v1.4.5-11
v1.4.5-12
v1.4.5-2
v1.4.5-3
v1.4.5-4
v1.4.5-6
v1.4.5-7
v1.4.5-8
v1.4.5-9
v1.4.7-1
v1.4.7-2
v1.4.7-3
v1.4.8-1
v1.4.8-2
v1.4.8-3
v1.4.8-4
v1.4.8-5
v1.4.8-6
v1.4.8-7
v1.4.9-1
v1.4.9-2
v1.4.9-3
v1.4.9-4
v1.4.9-5
v1.5.0-1
v1.5.0-2
v1.5.0-3
v1.5.0-4
v1.5.0-5
v1.5.1-1
v1.5.2-1
v1.5.2-2
v1.5.2-3
v1.5.4-1
v1.5.4-2
v1.5.5-1
v1.5.5-10
v1.5.5-11
v1.5.5-2
v1.5.5-3
v1.5.5-6
v1.5.5-7
v1.5.5-8
v1.5.5-9
v1.5.6-1
v1.5.6-10
v1.5.6-2
v1.5.6-3
v1.5.6-4
v1.5.6-5
v1.5.6-6
v1.5.6-7
v1.5.6-8
v1.5.6-9
v1.5.7-1
v1.5.7-11
v1.5.7-12
v1.5.7-13
v1.5.7-2
v1.5.7-3
v1.5.7-4
v1.5.7-5
v1.5.7-6
v1.5.7-7
v1.5.7-8
v1.5.7-9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-87877.json"
vanir_signatures 
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    {
        "deprecated": false,
        "digest": {
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            "length": 525
        },
        "id": "CVE-2026-87877-44dbbae1",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/luben/zstd-jni/commit/3216860eea289fbbae0b191c0a4fd8b72dad949c",
        "target": {
            "file": "src/main/native/jni_zstd.c",
            "function": "Java_com_github_luben_zstd_Zstd_getDirectByteBufferFrameContentSize"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
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                "70654406038950244899492554068964697791",
                "256841266079176367404669460587415964017",
                "136130365917502750732790875301653462261",
                "307914870517560413069750160813139035083"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-87877-cf1cd55a",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/luben/zstd-jni/commit/3216860eea289fbbae0b191c0a4fd8b72dad949c",
        "target": {
            "file": "src/main/native/jni_zstd.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "6130561471615133004258603361745015963",
            "length": 503
        },
        "id": "CVE-2026-87877-e402cad3",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/luben/zstd-jni/commit/3216860eea289fbbae0b191c0a4fd8b72dad949c",
        "target": {
            "file": "src/main/native/jni_zstd.c",
            "function": "Java_com_github_luben_zstd_Zstd_findDirectByteBufferFrameCompressedSize"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "243452810049814927721413726162029308560",
            "length": 552
        },
        "id": "CVE-2026-87877-e43e017d",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/luben/zstd-jni/commit/3216860eea289fbbae0b191c0a4fd8b72dad949c",
        "target": {
            "file": "src/main/native/jni_zstd.c",
            "function": "Java_com_github_luben_zstd_Zstd_decompressedDirectByteBufferSize"
        }
    }
]
vanir_signatures_modified 
"2026-09-10T08:16:10Z"