MAL-2026-16308

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/chat-adapter-matrix/MAL-2026-16308.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-16308
Published
2026-09-21T03:00:43Z
Modified
2026-09-21T03:30:16Z
Summary
Malicious code in chat-adapter-matrix (npm)
Details

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

Source: amazon-inspector (5710eb2e1a2f6b7a4aca8d943953989e80e056cc77c2071027c2a78744b5ea3a)

chat-adapter-matrix@99.99.99 executes server.js from every npm lifecycle hook (preinstall, install, postinstall, prepare, prepublish, preprepare, postprepare) and from the main module. server.js issues an HTTPS GET to the hardcoded webhook host eo8f3m3ho26a0nm.m.pipedream.net with the package name embedded in the URL path (https://eo8f3m3ho26a0nm.m.pipedream.net/vercel/). The receiving Pipedream endpoint captures the source IP, hostname context, and confirmation that this squatted name was resolved and installed. The implausibly high 99.99.99 version and the embedded 'Proof by @0xWise' string are consistent with a dependency-confusion payload designed to win version resolution against an internal package of the same name and beacon successful installs on internal build systems to the researcher/attacker's collector.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-020198",
            "import_time": "2026-09-21T03:24:20.609660713Z",
            "modified_time": "2026-09-21T03:00:43Z",
            "sha256": "5710eb2e1a2f6b7a4aca8d943953989e80e056cc77c2071027c2a78744b5ea3a",
            "source": "amazon-inspector",
            "versions": [
                "99.99.99"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / chat-adapter-matrix

Package

Name
chat-adapter-matrix
View open source insights on deps.dev
Purl
pkg:npm/chat-adapter-matrix

Affected ranges

Affected versions

99.*
99.99.99

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "server.js",
            "sha256": "22a26d5e684d961a83ee72d8a6d5219b2088c847eb8d0a236d5c9619724cf498",
            "tlsh": "8ae0616b0f965400ee76c184b4035865fa47dd3232f48145b31c51305f518e49c53bda"
        }
    ],
    "package_integrity": [
        {
            "filename": "chat-adapter-matrix-99.99.99.tgz",
            "hashes": {
                "sha1": "edb12e0b2bbd509ad3180169189915e84d80468e",
                "sha512_sri": "sha512-3cLHaqqdsFuZ5dOIG4PKiVl88mwkDgKV4gU35AzNpAIDFhVnw1UVOVQQGIMtT18rIpBDiVo1UToadGimtcngbg=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/chat-adapter-matrix/MAL-2026-16308.json"