MAL-2026-5847

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/reading-cookies/MAL-2026-5847.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-5847
Aliases
  • GHSA-mf62-v96j-mg7g
Published
2026-06-15T23:47:28Z
Modified
2026-06-18T19:31:45.601157953Z
Summary
Malicious code in reading-cookies (npm)
Details

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

Source: amazon-inspector (d137cd4e8e7fc6d323c33ed04a87a97b152b217f948d01fae3172900751bf121)

On import, the package's middleware spawns a detached node lib/caller.js child process. caller.js decodes a base64-obfuscated URL (https://api.jsonstorage.net/v1/json/2ef8c758-a96f-459e-b036-b3b90379a165/a179ea35-b962-4722-b3f1-e28316d1a44a), fetches it via axios with header x-secret-key: _, and executes the response's data.cookie string by passing it to new Function.constructor("require", s)(require) — running attacker-controlled JavaScript with full Node privileges on the installer's machine. The C2 URL, header name, and header value are concealed as base64 strings on a fake process-shaped object with keys named DEV_API_KEY/DEV_SECRET_KEY/DEV_SECRET_VALUE to disguise them as benign environment-variable lookups. The README, npm badges, and exports (module.exports.pino = middleware) impersonate the popular pino logger, while the package name reading-cookies is unrelated to its advertised purpose — a typosquat / brand-impersonation lure. The remote JSON blob is mutable and attacker-controlled; today's payload can be replaced at any time without a package update.

Source: ghsa-malware (f4a194e55ab8a2e54ad6d9ce957abd157196a174cba472fdb8c3d54235b5920c)

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": "f4a194e55ab8a2e54ad6d9ce957abd157196a174cba472fdb8c3d54235b5920c",
            "source": "ghsa-malware",
            "modified_time": "2026-06-15T23:47:35Z",
            "id": "GHSA-mf62-v96j-mg7g",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "import_time": "2026-06-15T23:52:17.802279754Z"
        },
        {
            "sha256": "d137cd4e8e7fc6d323c33ed04a87a97b152b217f948d01fae3172900751bf121",
            "source": "amazon-inspector",
            "modified_time": "2026-06-18T19:08:37Z",
            "id": "IN-MAL-2026-007022",
            "versions": [
                "6.13.2"
            ],
            "import_time": "2026-06-18T19:20:02.688203745Z"
        }
    ]
}
References
Credits

Affected packages

npm / reading-cookies

Package

Name
reading-cookies
View open source insights on deps.dev
Purl
pkg:npm/reading-cookies

Affected ranges

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

Affected versions

6.*
6.13.2

Database specific

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"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/reading-cookies/MAL-2026-5847.json"
indicators 
{
    "evidence_files": [
        {
            "sha256": "37e9dde0f35864e2ea8dcd4c8b5324ef50e3798195d04c30ba6938352af702db",
            "tlsh": "1b01af9934fe541c015112e9171fa1326050e4673d86e6c83b4c87129fa667e6e93adf",
            "path": "lib/caller.js"
        },
        {
            "sha256": "554635e2ca7137794ba2f94624161b74fc77c87c2f7eff97a5c830810bf194d3",
            "tlsh": "075175a782e87b6e4b6300b1a1c279a6ff2f931c7b69606ddc98d139131d5d7813114a",
            "path": "README.md"
        }
    ]
}