MAL-2026-4254

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/reactive-cdk-app/MAL-2026-4254.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-4254
Aliases
  • GHSA-ppjp-2h29-66pv
Published
2026-05-22T09:31:28Z
Modified
2026-05-29T23:02:01.243319638Z
Summary
Malicious code in reactive-cdk-app (npm)
Details

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

Source: amazon-inspector (84d7572f96294e867b18a0448ac0e70af3d08769749aa73388b38d88492559e4)

package.json declares preinstall: node index.js, so installation automatically executes index.js. The script reads /etc/passwd via fs.readFileSync, collects hostname, username, platform, cwd, and home directory from the os module, slices the first 30 entries of process.env (which on CI typically include AWS_*, GITHUBTOKEN, NPMTOKEN, and similar credentials), and HTTPS-POSTs the JSON payload to 3nrgzlqwix6erldow0s0kttsojuai36s.oastify.com — a Burp Collaborator out-of-band exfiltration subdomain. The package name and description ('package of the reactive-cdk-app of the aws') impersonate AWS CDK naming, fitting a typosquat-with-payload pattern. Any developer or CI system running npm install reactive-cdk-app leaks host identity, the local user database, and a bulk slice of environment secrets to the attacker.

Source: ghsa-malware (171cafb2d7e5b500dd92fe5d46da3a09b37ac9ff62af885241b41e8401746144)

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.

Source: ossf-package-analysis (d01657e9ca5ae8e8f34576437bbc86bb276c83d99dfd1563da57fe880a6ac6fd)

The OpenSSF Package Analysis project identified 'reactive-cdk-app' @ 1.0.1 (npm) as malicious.

It is considered malicious because:

  • The package communicates with a domain associated with malicious activity.
Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-05-22T09:35:40Z",
            "versions": [
                "1.0.1"
            ],
            "source": "ossf-package-analysis",
            "import_time": "2026-05-22T10:33:49.884538297Z",
            "sha256": "d01657e9ca5ae8e8f34576437bbc86bb276c83d99dfd1563da57fe880a6ac6fd"
        },
        {
            "source": "amazon-inspector",
            "sha256": "ad185c182eb6262541352d633509ab6c3b35e66e0456b9a6871da0641a4ad1b1",
            "versions": [
                "1.0.4"
            ],
            "modified_time": "2026-05-22T10:33:38Z",
            "import_time": "2026-05-26T05:52:06.871949241Z",
            "id": "IN-MAL-2026-004191"
        },
        {
            "id": "IN-MAL-2026-004185",
            "modified_time": "2026-05-22T10:22:41Z",
            "versions": [
                "1.0.3"
            ],
            "source": "amazon-inspector",
            "import_time": "2026-05-26T05:52:06.162701737Z",
            "sha256": "ca92f78b93f86679498366c041a15bbfa55e8a2f9d14d0263c876aea75cefe27"
        },
        {
            "modified_time": "2026-05-22T09:31:28Z",
            "source": "amazon-inspector",
            "versions": [
                "1.0.1"
            ],
            "sha256": "d07f0097c4a9b1169ba7069a197de2fb3770ba5d3e5904af463c750e226a2c7c",
            "import_time": "2026-05-26T05:52:05.337542152Z",
            "id": "IN-MAL-2026-004178"
        },
        {
            "sha256": "062b4ae8e07104f0c7a05845432701b2927c63f3a678b27108db6837eca35443",
            "modified_time": "2026-05-22T09:31:29Z",
            "versions": [
                "1.0.1"
            ],
            "source": "amazon-inspector",
            "import_time": "2026-05-26T05:52:05.509854627Z",
            "id": "IN-MAL-2026-004179"
        },
        {
            "modified_time": "2026-05-22T09:53:10Z",
            "source": "amazon-inspector",
            "versions": [
                "1.0.2"
            ],
            "sha256": "2ee2278b633f78383f38f7b885af48b8346d4291b8eada608a94024b39080358",
            "import_time": "2026-05-26T05:52:05.60845428Z",
            "id": "IN-MAL-2026-004180"
        },
        {
            "sha256": "495d1f7b248c12ccb1f7d7dbc1f97f0462f21bb13d6a7c2639e280efc97bf2d9",
            "modified_time": "2026-05-22T10:22:41Z",
            "versions": [
                "1.0.3"
            ],
            "source": "amazon-inspector",
            "import_time": "2026-05-26T05:52:06.28503018Z",
            "id": "IN-MAL-2026-004186"
        },
        {
            "source": "amazon-inspector",
            "sha256": "84d7572f96294e867b18a0448ac0e70af3d08769749aa73388b38d88492559e4",
            "versions": [
                "1.0.4"
            ],
            "modified_time": "2026-05-22T10:33:38Z",
            "import_time": "2026-05-26T05:52:06.737097329Z",
            "id": "IN-MAL-2026-004190"
        },
        {
            "source": "ghsa-malware",
            "sha256": "171cafb2d7e5b500dd92fe5d46da3a09b37ac9ff62af885241b41e8401746144",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "modified_time": "2026-05-29T22:03:23Z",
            "import_time": "2026-05-29T22:44:06.046663547Z",
            "id": "GHSA-ppjp-2h29-66pv"
        }
    ]
}
References
Credits

Affected packages

npm / reactive-cdk-app

Package

Name
reactive-cdk-app
View open source insights on deps.dev
Purl
pkg:npm/reactive-cdk-app

Affected ranges

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

Affected versions

1.*
1.0.1
1.0.2
1.0.3
1.0.4

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"
    },
    {
        "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"
    },
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/reactive-cdk-app/MAL-2026-4254.json"
indicators 
{
    "domains": [
        "3nrgzlqwix6erldow0s0kttsojuai36s.oastify.com"
    ],
    "evidence_files": [
        {
            "path": "index.js",
            "sha256": "6de1cc23b8d40a830077c66296ca884fd463a1ff12d5669c33ca0efbea9078c9",
            "tlsh": "db412e9424f9953476f35981b18354226b63fb02390bf5a0badc03894bc9be45172af9"
        },
        {
            "path": "package.json",
            "sha256": "5a2248c14d8bb581a7dc436a7ddef188d0e0c435c279368708312b461e60a428",
            "tlsh": "a5d0c2608b606bb718e40d748cba8885a172186a0065a85836839018828dae648fb28e"
        }
    ],
    "package_integrity": [
        {
            "hashes": {
                "sha1": "274b7990b5f4b1d9ad7b9e011cdcdb890d67a632",
                "sha512_sri": "sha512-Qdx7vLWF7SPnAdg3yS7BHAefHXBfr2EX07l7IRS94zKRhHyPMuCXs49TOzTrE8UXHNwic7AmcLeSV++mgGg4kA=="
            },
            "filename": "reactive-cdk-app-1.0.3.tgz"
        }
    ]
}