MAL-2026-14040

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@workoscalifant/sudoku-term/MAL-2026-14040.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-14040
Published
2026-08-14T15:06:20Z
Modified
2026-08-14T15:30:49.718630515Z
Summary
Malicious code in @workoscalifant/sudoku-term (npm)
Details

-= Per source details. Do not edit below this line.=-

Source: amazon-inspector (61a676b7bd005c67960fae27b9371d1c321998f5d7f6f0d9fc5f2b7d27fb22ce)

package.json declares a postinstall script that imports src/hint.js and calls nativeBinaryPath(), which execFileSyncs prebuilt/linux-x64/sudoku-hint with '--selftest' on every Linux x64 installer. The shipped Linux artifact is a ~34 MB Go-runtime executable (sha256 ac6b4523fbe02c79129e58bdc8d613ddfb3a786c23dd03fa4ab28ab38ff3e6e5) containing Go runtime symbols, chacha8, and /proc/self/cgroup / /proc/self/mountinfo references. The corresponding darwin-x64 artifact built from the same declared source (native/hint.c, ~200 lines of pure C) is only 12,968 bytes and contains the expected C solver strings ('SUDOKU-HINT %s ok', 'naked single', 'rowmask'). The Linux binary is roughly 2,600x larger than its macOS counterpart and cannot be produced by the shipped build recipe (gcc -static hint.c), yet it is deliberately crafted to respond to '--selftest' with 'SUDOKU-HINT' so src/hint.js accepts it as the legitimate helper. The README additionally claims a '26 KB' static-musl ELF that 'opens no sockets', contradicting the shipped bytes. The installer therefore executes opaque, unverifiable native code from an untrusted source at install time under the guise of a small C sudoku solver.

Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-08-14T15:21:28.650646018Z",
            "sha256": "43c918d669056b4820e50677aac77f32705e97a0c977ef9dfff896001822cfed",
            "modified_time": "2026-08-14T15:06:31Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-017897",
            "versions": [
                "1.1.4"
            ]
        },
        {
            "import_time": "2026-08-14T15:21:28.961824262Z",
            "sha256": "cbaeb3406aceac57f5ea4404e798079a06ee5cbc88c61b492ac545049aacdcce",
            "modified_time": "2026-08-14T15:07:20Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-017902",
            "versions": [
                "1.1.5"
            ]
        },
        {
            "import_time": "2026-08-14T15:21:28.736132384Z",
            "sha256": "e8b26deac267113efacf8686d6eb6d3e68033bd65a0781c059b4b9875b226740",
            "modified_time": "2026-08-14T15:06:42Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-017898",
            "versions": [
                "1.1.3"
            ]
        },
        {
            "import_time": "2026-08-14T15:21:28.925845836Z",
            "sha256": "61a676b7bd005c67960fae27b9371d1c321998f5d7f6f0d9fc5f2b7d27fb22ce",
            "modified_time": "2026-08-14T15:07:11Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-017901",
            "versions": [
                "1.1.1"
            ]
        },
        {
            "import_time": "2026-08-14T15:21:28.603934188Z",
            "sha256": "6e46dc62a8e4e085911290c5e2316152b523f01076841e74cfc64988c57bd627",
            "modified_time": "2026-08-14T15:06:20Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-017896",
            "versions": [
                "1.1.7"
            ]
        },
        {
            "import_time": "2026-08-14T15:21:28.888115324Z",
            "sha256": "6f2de2d7017ef54c9aa0c6ae729847bfe3fec0b9723192354fafc52cc72d95b3",
            "modified_time": "2026-08-14T15:07:02Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-017900",
            "versions": [
                "1.1.2"
            ]
        },
        {
            "import_time": "2026-08-14T15:21:28.831622666Z",
            "sha256": "9a76f26b7dd5b01bb289283cd67bc755b72f00a77c901445f3b86ca8efc72362",
            "modified_time": "2026-08-14T15:06:53Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-017899",
            "versions": [
                "1.1.8"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / @workoscalifant/sudoku-term

Package

Name
@workoscalifant/sudoku-term
View open source insights on deps.dev
Purl
pkg:npm/%40workoscalifant/sudoku-term

Affected ranges

Affected versions

1.*
1.1.1
1.1.2
1.1.3
1.1.4
1.1.5
1.1.7
1.1.8

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@workoscalifant/sudoku-term/MAL-2026-14040.json"
indicators 
{
    "evidence_files": [
        {
            "sha256": "0ca66e9fc13c045a7299fc87844011e353d59b6578e79138f17209c301522ef6",
            "tlsh": "b401fda64f0d1b928b214bd0031cb1e61fa3c0704b81ad70929f8e24338630032461eb",
            "path": "scripts/postinstall.js"
        },
        {
            "sha256": "d23938c4ac457e85b92335bbbab50ef90a1ebcdcc4368f4192d42b3c658763f0",
            "path": "README.md",
            "tlsh": "148185318b00b76d3fd1d2ad9a0736f4aa14b8b6f781d855bc4e741183ce07101a5df2"
        }
    ],
    "package_integrity": [
        {
            "filename": "sudoku-term-1.1.8.tgz",
            "hashes": {
                "sha512_sri": "sha512-/SadEEkikUnS1ot/XeNFE42TQi44Rah2B61MG6rxC2q3uPWAc4r3D/hepgiCoripFHWl2ebsj9i3zO+c2shPCw==",
                "sha1": "179e52b504ebfd1fa16ba4d764442bc53c71ae72"
            }
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]