MAL-2026-5351

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@demica/shared/MAL-2026-5351.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-5351
Aliases
  • GHSA-h89w-h537-fmq5
Published
2026-06-09T07:53:11Z
Modified
2026-08-13T22:15:15Z
Summary
Malicious code in @demica/shared (npm)
Details

Note: This report is updated by a verification record

Dep-confusion squat of internal @demica/shared at sentinel high version 99.99.100 + auto-exec postinstall (canary.js) beaconing to RAW IP 157.230.17.236:80/dc. Sentinel-high-version + auto-exec beacon = MALICIOUS per operator policy (c913); "authorized canary" framing does NOT downgrade, raw-IP dest matches masterkrweb. 6-pkg @demica canary campaign.

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

Source: amazon-inspector (becb5aca9f28fbd99a4f45ed70489960879ba81cfbd2071648c98cf5e867d8f9)

On install, the package's postinstall hook (node canary.js postinstall per package.json) issues an unconditional HTTP GET to bare IP 157.230.17.236:80 at path /dc with query params containing the package name, version, a nonce, and the lifecycle phase. No environment variables, filesystem contents, or credentials are read or transmitted; the payload is limited to package metadata. The README describes this as an authorized dependency-confusion canary against the @demica scope. The fact-of-install ping is otherwise benign, but it performs unconsented outbound network at install time, the destination is a bare IP over cleartext HTTP with no authentication or pinning, and the same postinstall hook is a position from which a future republish could deliver arbitrary payloads. Routing to human review so the @demica organization can confirm the canary is theirs and that the destination IP is operator-controlled.

Source: ghsa-malware (d2d0202ffac4ede64b63611e7b71ba7f8858b530da496ed5068829da36d08369)

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-2026-005010",
            "import_time": "2026-06-09T17:45:48.736420074Z",
            "modified_time": "2026-06-09T17:17:04Z",
            "sha256": "dfc020ab633bac129072df0d74deea8e0a2e118b43dbebf01ba9bbf2b13b6e76",
            "source": "amazon-inspector",
            "versions": [
                "99.99.100"
            ]
        },
        {
            "id": "IN-MAL-2026-008112",
            "import_time": "2026-07-08T17:01:31.442519658Z",
            "modified_time": "2026-07-08T16:26:35Z",
            "sha256": "becb5aca9f28fbd99a4f45ed70489960879ba81cfbd2071648c98cf5e867d8f9",
            "source": "amazon-inspector",
            "versions": [
                "99.99.99"
            ]
        },
        {
            "id": "GHSA-h89w-h537-fmq5",
            "import_time": "2026-08-13T22:11:44.620604865Z",
            "modified_time": "2026-08-13T15:26:15Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "d2d0202ffac4ede64b63611e7b71ba7f8858b530da496ed5068829da36d08369",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / @demica/shared

Package

Name
@demica/shared
View open source insights on deps.dev
Purl
pkg:npm/%40demica/shared

Affected ranges

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

Affected versions

99.*
99.99.99
99.99.100

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"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "canary.js",
            "sha256": "f0e043a9aa214fb0e7b51f2db91b34110f86ec47d1b9f986817ecfab32db66a2",
            "tlsh": "a0011edb48b1e27223f608caa0630e67f212d291326bacf07c8809411f8e88c4276994"
        },
        {
            "path": "package.json",
            "sha256": "916dd2a16d4bcb559c5da020f7768ca235bc374942a61ffdd6c9b2758c4264c2",
            "tlsh": "b0e055209a100d3721d815d90c6e406391630c2b0a043d2873af405c575e3b726ff22e"
        }
    ],
    "package_integrity": [
        {
            "filename": "shared-99.99.100.tgz",
            "hashes": {
                "sha1": "d65f625818583c60e1a94e298d6e8c2b64ac2783",
                "sha512_sri": "sha512-pHwqm1rzcY74zztUBYZUW8fBzIPAI4pqH621RewuSQ78aZ2jpu6FEtOjydE1LxQcKVfhyapcAm3daqpQqR0F5A=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@demica/shared/MAL-2026-5351.json"