MAL-2026-4652

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/python-utils/MAL-2026-4652.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-4652
Aliases
  • GHSA-3c8h-wfcm-wpw5
Published
2026-05-20T02:36:56Z
Modified
2026-06-10T15:31:30.449806352Z
Summary
Malicious code in python-utils (npm)
Details

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

Source: amazon-inspector (5b94c01fae325c5f5e92abd5da03527c54e22bb48202b1dc8b3e2c64947753b2)

package.json declares "preinstall": "./dist/typecheck.js". The referenced file is not JavaScript — it is a 5,224,556-byte Linux x86 ELF executable (containing __libc_start_main, /lib64, and nux-x86- interpreter strings) with the literal endpoint 207.90.194.2:443 baked into it. The native binary is concealed behind forged TypeScript build metadata: a sibling dist/typecheck.d.ts declares a getParser(): Promise<Parser> API for tree-sitter Python, and dist/typecheck.js.map is a reused copy of parser.js.map (its "file" field is "parser.js"), making the dropper look like ordinary tsdown output to a casual reviewer. On npm install on any Linux x86 host, the ELF runs automatically as the installer's user, calling out to the hardcoded IP:port. The package's stated purpose (a Python utility / tree-sitter parser wrapper) has no legitimate need to ship or execute a native binary at install time, and no pure-JS code path actually consumes getParser.

Source: ghsa-malware (c921a2001a2f3f31f6029ffd8f1eff35ac7b4d3250a6f25f7b2b8ecafe633665)

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": [
        {
            "versions": [
                "0.2.26"
            ],
            "sha256": "5b94c01fae325c5f5e92abd5da03527c54e22bb48202b1dc8b3e2c64947753b2",
            "modified_time": "2026-05-20T02:36:56Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-003426",
            "import_time": "2026-05-26T05:50:37.227323345Z"
        },
        {
            "sha256": "c921a2001a2f3f31f6029ffd8f1eff35ac7b4d3250a6f25f7b2b8ecafe633665",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "source": "ghsa-malware",
            "modified_time": "2026-06-10T14:07:05Z",
            "import_time": "2026-06-10T15:25:13.600495518Z",
            "id": "GHSA-3c8h-wfcm-wpw5"
        }
    ]
}
References
Credits

Affected packages

npm / python-utils

Package

Name
python-utils
View open source insights on deps.dev
Purl
pkg:npm/python-utils

Affected ranges

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

Affected versions

0.*
0.2.26

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "python-utils-0.2.26.tgz",
            "hashes": {
                "sha512_sri": "sha512-hXunJn8yfGgunf/SAgsm1RlfHE++k7XbiuaA9WHMcncmesxs5mcPCDknjBvYQrUyS9lFRjSlCmncdjjTljhYug==",
                "sha1": "22e94f6a4997a649f904de4e54772bf6349748d2"
            }
        }
    ],
    "evidence_files": [
        {
            "sha256": "cafebcfe50f4d6ed218f4525f44b81654bf2df4ebb06918984b4257940d4fd5b",
            "path": "dist/typecheck.js",
            "tlsh": "573633fb10d3b2ea31a258191ab675a067017c362d8e6110be4fd697d37dcdae16230f"
        },
        {
            "sha256": "d4f0edd5346dc9df95dc008b95c1bcb0ca83aaa92ee3dbc9a46e83a376605ede",
            "path": "dist/typecheck.js.map",
            "tlsh": "2a5133036c76c930b1212fe96d9d45416718b00c22d8da24bcac91213ba7f5ff9fb4a5"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/python-utils/MAL-2026-4652.json"
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"
    }
]