MAL-2026-13369

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/kepler/MAL-2026-13369.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13369
Published
2026-08-05T18:27:24Z
Modified
2026-08-05T19:19:50.800374767Z
Summary
Malicious code in kepler (npm)
Details

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

Source: amazon-inspector (672a1c042704318fe56d5da08c0f1d20b404274bd6ad339efc2f1c581d869d77)

kepler@2.0.999 declares its only runtime dependency, flag-serial-object-syntax, as an HTTP URL to a third-party host (https://artifacts.yosiroute.com/npm/flag-serial-object-syntax) rather than a version resolved from the npm registry, and the shrinkwrap marks that dependency with hasInstallScript: true. Running npm install kepler fetches an unpinned, unverified tarball from artifacts.yosiroute.com and executes its lifecycle scripts on the installer's machine. The URL carries no version and no integrity metadata, so its contents can change at any time under the third-party host's control. The kepler package itself has placeholder metadata (author Package Registry, repository github.com/example/...) unrelated to the yosiroute.com host, and ships no first-party code that would justify sourcing a dependency off-registry. The dependency-tree-hijack shape — an off-registry, mutable, install-scripted tarball pulled in transitively — means any code the operator of artifacts.yosiroute.com serves runs with the privileges of the installer on npm install.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015874",
            "import_time": "2026-08-05T19:04:56.469042876Z",
            "sha256": "0d7424c4bf9dadcf075409385c0eef51a71fb09c4b3a0af8e5fa94d4b114927e",
            "modified_time": "2026-08-05T18:28:24Z",
            "versions": [
                "1.999.999"
            ],
            "source": "amazon-inspector"
        },
        {
            "id": "IN-MAL-2026-015871",
            "import_time": "2026-08-05T19:04:56.22624153Z",
            "sha256": "42dabb9eccd298be07ee2b28cb1eb46b01695c6782d929c814ca2aa5853b6cf6",
            "modified_time": "2026-08-05T18:27:52Z",
            "versions": [
                "5.999.999"
            ],
            "source": "amazon-inspector"
        },
        {
            "id": "IN-MAL-2026-015875",
            "import_time": "2026-08-05T19:04:56.521276135Z",
            "sha256": "74138abe21e3f147653ddcdc66bdd2da5cabcb709df1df1f4e70aaaba2d52582",
            "modified_time": "2026-08-05T18:28:32Z",
            "versions": [
                "2.1.999"
            ],
            "source": "amazon-inspector"
        },
        {
            "id": "IN-MAL-2026-015869",
            "import_time": "2026-08-05T19:04:56.062162152Z",
            "sha256": "82749393940fe7d5039ac6ab3a624b996b08574e511819757615da856c16cfc4",
            "modified_time": "2026-08-05T18:27:31Z",
            "versions": [
                "4.999.999"
            ],
            "source": "amazon-inspector"
        },
        {
            "id": "IN-MAL-2026-015872",
            "import_time": "2026-08-05T19:04:56.302354805Z",
            "sha256": "dd02ec8ed4eca599bf9972019d4a2c8c7405acd0aa78b565336abf42196a2d7a",
            "modified_time": "2026-08-05T18:28:02Z",
            "versions": [
                "1.0.999"
            ],
            "source": "amazon-inspector"
        },
        {
            "id": "IN-MAL-2026-015876",
            "import_time": "2026-08-05T19:04:56.576563532Z",
            "sha256": "fcf79ec47183fb665fcc61a0bc42f94b413627ca8355d3cbe4ca207994ad46ae",
            "modified_time": "2026-08-05T18:28:40Z",
            "versions": [
                "5.0.999"
            ],
            "source": "amazon-inspector"
        },
        {
            "id": "IN-MAL-2026-015868",
            "import_time": "2026-08-05T19:04:55.997462563Z",
            "sha256": "3310b4c32cf6a605d18b3866ebffe33bfb3a9a9efc9b9d65bc25edaab4af204f",
            "modified_time": "2026-08-05T18:27:24Z",
            "versions": [
                "2.6.999"
            ],
            "source": "amazon-inspector"
        },
        {
            "id": "IN-MAL-2026-015877",
            "import_time": "2026-08-05T19:04:56.646649333Z",
            "sha256": "452f932dd87c65b770da6b68e27082d45512867de3b75053e3e4beabff1ec06f",
            "modified_time": "2026-08-05T18:28:49Z",
            "versions": [
                "2.2.999"
            ],
            "source": "amazon-inspector"
        },
        {
            "id": "IN-MAL-2026-015878",
            "import_time": "2026-08-05T19:04:56.720127386Z",
            "sha256": "4dbd8b56343d26c8df4d7af37be2d05c7c54bedac8d0b0015805f042f31448c4",
            "modified_time": "2026-08-05T18:28:58Z",
            "versions": [
                "99.99.99"
            ],
            "source": "amazon-inspector"
        },
        {
            "versions": [
                "2.999.999"
            ],
            "import_time": "2026-08-05T19:04:56.135839386Z",
            "sha256": "5d1b4e0a96edd9df537d892d75f144b471786c492ebd3a02ca83c91b344747f8",
            "modified_time": "2026-08-05T18:27:41Z",
            "id": "IN-MAL-2026-015870",
            "source": "amazon-inspector"
        },
        {
            "versions": [
                "2.0.999"
            ],
            "import_time": "2026-08-05T19:04:56.398757423Z",
            "sha256": "672a1c042704318fe56d5da08c0f1d20b404274bd6ad339efc2f1c581d869d77",
            "modified_time": "2026-08-05T18:28:11Z",
            "id": "IN-MAL-2026-015873",
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / kepler

Package

Name
kepler
View open source insights on deps.dev
Purl
pkg:npm/kepler

Affected ranges

Affected versions

1.*
1.0.999
1.999.999
2.*
2.0.999
2.1.999
2.2.999
2.6.999
2.999.999
4.*
4.999.999
5.*
5.0.999
5.999.999
99.*
99.99.99

Database specific

cwes 
[
    {
        "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",
        "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",
        "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"
    }
]
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-bYSclM8OrkhfFr0YP+NIRIZMPw3mXwaiWRUPO9SIFIZTnriwZsrvFLoaTqp3he29Po47CRMarH/pxu2Xn64GOw==",
                "sha1": "da214e669d3f42fc2fe3b4ef4db3e8412e64d378"
            },
            "filename": "kepler-1.999.999.tgz"
        }
    ],
    "evidence_files": [
        {
            "sha256": "e3dc40c2088a5bbefc57ead975aa025478c33648e7348c027bb8eb99a3649f48",
            "path": "package.json",
            "tlsh": "55e02ba14920c63312c4159588165445b7221c0bd90cfc9c77c3826f828d5a318fd51c"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/kepler/MAL-2026-13369.json"