MAL-2026-16394

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/envparse2/MAL-2026-16394.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-16394
Aliases
  • GHSA-q747-c2cv-gfhj
Published
2026-09-22T18:22:20Z
Modified
2026-09-22T22:30:05Z
Summary
Malicious code in envparse2 (npm)
Details

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

Source: amazon-inspector (59aed7381a2a7026336f5e79671e05e9313688533ca35e15cf7010a975c2c897)

On require() of the package's main entry and on invocation of the dot2env CLI, the module reads the bundled dist/stest.jpg, parses JPEG markers, and extracts a UTF-8 string from the APP13 (0xED) segment. The extracted string is passed as an argument to powershell.exe -NoProfile -NonInteractive -EncodedCommand, launched hidden on Windows via a VBS relay dropped to %TMP% and invoked through wscript.exe. The invocation is assembled from split string fragments (['power','shell','.exe'].join(''), -Encoded+Command, wscript+.exe) to hide the command from static scanners, and identifiers use a telemetry/analytics cover story (telemetryFs, dispatchAnalytics, analyticsEnvelope, scanMetricFrame). Execution is triggered unconditionally by a top-level const {dispatchAnalytics:Re}=T(); Re(); in dist/index.cjs. The bundle also embeds a package.json fragment declaring name: 'node-env-buffer', version: '2.2.6' while the tarball is published as envparse2@1.0.1, indicating a renamed republish under a dotenv-style cover identity. The 287 KB JPEG has no legitimate role in a dotenv-style library; it is a container for the executable payload.

Source: ghsa-malware (438952ae1e11ed7118f698ec2f5a31caa0af6dd843115a02ba9515a7fc5c21ff)

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":  "GHSA-q747-c2cv-gfhj",
            "import_time":  "2026-09-22T18:31:21.180571907Z",
            "modified_time":  "2026-09-22T18:22:21Z",
            "ranges":  [
                {
                    "events":  [
                        {
                            "introduced":  "0"
                        }
                    ],
                    "type":  "SEMVER"
                }
            ],
            "sha256":  "438952ae1e11ed7118f698ec2f5a31caa0af6dd843115a02ba9515a7fc5c21ff",
            "source":  "ghsa-malware"
        },
        {
            "id":  "IN-MAL-2026-020300",
            "import_time":  "2026-09-22T22:16:10.43459301Z",
            "modified_time":  "2026-09-22T21:49:27Z",
            "sha256":  "59aed7381a2a7026336f5e79671e05e9313688533ca35e15cf7010a975c2c897",
            "source":  "amazon-inspector",
            "versions":  [
                "1.0.1"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / envparse2

Package

Name
envparse2
View open source insights on deps.dev
Purl
pkg:npm/envparse2

Affected ranges

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

Affected versions

1.*
1.0.1

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"
    }
]
indicators 
{
    "evidence_files":  [
        {
            "path":  "dist/index.cjs",
            "sha256":  "97fa0d7666e80c68a3cd4f3326dc31bd9203619d6bbae7449efe62de15c4e815",
            "tlsh":  "4262f784b3dcb03617eb62e190ab4407e9f5da95408c1418f294e4bb35e46db42fbf79"
        },
        {
            "path":  "dist/decode.js",
            "sha256":  "f1af48cff9984a5d522d86b82f81dae9deb7d9cf42f12c68253a43acea100d22",
            "tlsh":  "03516242adb2a10a076397b787c740282375fd03b404d894b85cc7415faa79e467befd"
        },
        {
            "path":  "dist/cli.cjs",
            "sha256":  "8556eeca50285aea12dfdcbc4ebcee110d916ef81ddde2e338dcf78bda2028cf",
            "tlsh":  "d792d74473cdb47a17e621d070ab500beaf2cb60459c1504f2dcb07627f4a9a96ebfb9"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/envparse2/MAL-2026-16394.json"