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
Aliases
  • GHSA-4h56-85v2-4qj4
Published
2026-08-05T18:27:24Z
Modified
2026-08-20T13:45:12Z
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.

Source: ghsa-malware (3e9c8ce334283800aaf7e327561dde2f9e8a54a897457868b99e7c0efd2d7912)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015874",
            "import_time": "2026-08-05T19:04:56.469042876Z",
            "modified_time": "2026-08-05T18:28:24Z",
            "sha256": "0d7424c4bf9dadcf075409385c0eef51a71fb09c4b3a0af8e5fa94d4b114927e",
            "source": "amazon-inspector",
            "versions": [
                "1.999.999"
            ]
        },
        {
            "id": "IN-MAL-2026-015871",
            "import_time": "2026-08-05T19:04:56.22624153Z",
            "modified_time": "2026-08-05T18:27:52Z",
            "sha256": "42dabb9eccd298be07ee2b28cb1eb46b01695c6782d929c814ca2aa5853b6cf6",
            "source": "amazon-inspector",
            "versions": [
                "5.999.999"
            ]
        },
        {
            "id": "IN-MAL-2026-015875",
            "import_time": "2026-08-05T19:04:56.521276135Z",
            "modified_time": "2026-08-05T18:28:32Z",
            "sha256": "74138abe21e3f147653ddcdc66bdd2da5cabcb709df1df1f4e70aaaba2d52582",
            "source": "amazon-inspector",
            "versions": [
                "2.1.999"
            ]
        },
        {
            "id": "IN-MAL-2026-015869",
            "import_time": "2026-08-05T19:04:56.062162152Z",
            "modified_time": "2026-08-05T18:27:31Z",
            "sha256": "82749393940fe7d5039ac6ab3a624b996b08574e511819757615da856c16cfc4",
            "source": "amazon-inspector",
            "versions": [
                "4.999.999"
            ]
        },
        {
            "id": "IN-MAL-2026-015872",
            "import_time": "2026-08-05T19:04:56.302354805Z",
            "modified_time": "2026-08-05T18:28:02Z",
            "sha256": "dd02ec8ed4eca599bf9972019d4a2c8c7405acd0aa78b565336abf42196a2d7a",
            "source": "amazon-inspector",
            "versions": [
                "1.0.999"
            ]
        },
        {
            "id": "IN-MAL-2026-015876",
            "import_time": "2026-08-05T19:04:56.576563532Z",
            "modified_time": "2026-08-05T18:28:40Z",
            "sha256": "fcf79ec47183fb665fcc61a0bc42f94b413627ca8355d3cbe4ca207994ad46ae",
            "source": "amazon-inspector",
            "versions": [
                "5.0.999"
            ]
        },
        {
            "id": "IN-MAL-2026-015868",
            "import_time": "2026-08-05T19:04:55.997462563Z",
            "modified_time": "2026-08-05T18:27:24Z",
            "sha256": "3310b4c32cf6a605d18b3866ebffe33bfb3a9a9efc9b9d65bc25edaab4af204f",
            "source": "amazon-inspector",
            "versions": [
                "2.6.999"
            ]
        },
        {
            "id": "IN-MAL-2026-015877",
            "import_time": "2026-08-05T19:04:56.646649333Z",
            "modified_time": "2026-08-05T18:28:49Z",
            "sha256": "452f932dd87c65b770da6b68e27082d45512867de3b75053e3e4beabff1ec06f",
            "source": "amazon-inspector",
            "versions": [
                "2.2.999"
            ]
        },
        {
            "id": "IN-MAL-2026-015878",
            "import_time": "2026-08-05T19:04:56.720127386Z",
            "modified_time": "2026-08-05T18:28:58Z",
            "sha256": "4dbd8b56343d26c8df4d7af37be2d05c7c54bedac8d0b0015805f042f31448c4",
            "source": "amazon-inspector",
            "versions": [
                "99.99.99"
            ]
        },
        {
            "id": "IN-MAL-2026-015870",
            "import_time": "2026-08-05T19:04:56.135839386Z",
            "modified_time": "2026-08-05T18:27:41Z",
            "sha256": "5d1b4e0a96edd9df537d892d75f144b471786c492ebd3a02ca83c91b344747f8",
            "source": "amazon-inspector",
            "versions": [
                "2.999.999"
            ]
        },
        {
            "id": "IN-MAL-2026-015873",
            "import_time": "2026-08-05T19:04:56.398757423Z",
            "modified_time": "2026-08-05T18:28:11Z",
            "sha256": "672a1c042704318fe56d5da08c0f1d20b404274bd6ad339efc2f1c581d869d77",
            "source": "amazon-inspector",
            "versions": [
                "2.0.999"
            ]
        },
        {
            "id": "GHSA-4h56-85v2-4qj4",
            "import_time": "2026-08-20T13:33:26.037374491Z",
            "modified_time": "2026-08-20T13:08:35Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "3e9c8ce334283800aaf7e327561dde2f9e8a54a897457868b99e7c0efd2d7912",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / kepler

Package

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

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected

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"
    },
    {
        "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"
    },
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "package.json",
            "sha256": "e3dc40c2088a5bbefc57ead975aa025478c33648e7348c027bb8eb99a3649f48",
            "tlsh": "55e02ba14920c63312c4159588165445b7221c0bd90cfc9c77c3826f828d5a318fd51c"
        }
    ],
    "package_integrity": [
        {
            "filename": "kepler-1.999.999.tgz",
            "hashes": {
                "sha1": "da214e669d3f42fc2fe3b4ef4db3e8412e64d378",
                "sha512_sri": "sha512-bYSclM8OrkhfFr0YP+NIRIZMPw3mXwaiWRUPO9SIFIZTnriwZsrvFLoaTqp3he29Po47CRMarH/pxu2Xn64GOw=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/kepler/MAL-2026-13369.json"