MAL-2026-4580

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/http-uploader-dev/MAL-2026-4580.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-4580
Aliases
  • GHSA-4cmw-88qw-qcpr
Published
2026-05-21T09:06:31Z
Modified
2026-06-29T17:31:51.162407568Z
Summary
Malicious code in http-uploader-dev (npm)
Details

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

Source: amazon-inspector (936024fb65d6ab06a1f01fcd765b534812efb873f076e81303d87c0b141bba2b)

package.json declares "preinstall": "bun run index.js", which on npm install invokes Bun to run index.js. index.js detects the host OS and shells out to launch an unrelated local application — open -a Calculator on macOS, calc.exe on Windows, and xcalc/gnome-calculator/kcalc on Linux — via execSync. This is the canonical proof-of-concept install-time RCE payload and bears no relation to the package's stated 'http uploader' purpose. Two independently suspicious structural traits compound the lifecycle behavior: (1) the preinstall hook routes execution through Bun, an alternate runtime fetched outside the normal Node resolution path, matching the alternate-runtime-dropper pattern; (2) package metadata is placeholder/throwaway (author 'sleep', homepage https://git.hfaf.com/urlaa, generic name 'http-uploader-dev'). The PoC nature of the current payload (launching a calculator) does not lower the severity: any installer running npm install http-uploader-dev executes attacker-chosen commands at install time, and a future republish can swap in arbitrary code with no change to the trigger surface.

Source: ghsa-malware (595cbb63f10b51d521487fcdfe110eb8ffd5dabe512f96a960d43c89fee1b2be)

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": [
        {
            "import_time": "2026-05-26T05:51:19.972056137Z",
            "sha256": "936024fb65d6ab06a1f01fcd765b534812efb873f076e81303d87c0b141bba2b",
            "modified_time": "2026-05-21T09:47:46Z",
            "versions": [
                "1.0.3"
            ],
            "id": "IN-MAL-2026-003797",
            "source": "amazon-inspector"
        },
        {
            "id": "IN-MAL-2026-003788",
            "sha256": "c5c79f07e872440f7a6cdddf0385c8e88675a0def325a08af63de330f1cd94c3",
            "modified_time": "2026-05-21T09:06:31Z",
            "versions": [
                "1.0.0"
            ],
            "source": "amazon-inspector",
            "import_time": "2026-05-26T05:51:18.977386732Z"
        },
        {
            "id": "IN-MAL-2026-003795",
            "sha256": "dad89f8aa4b11f7ca9548e55a763bff12293a14d3889074f847d4735e1af5126",
            "modified_time": "2026-05-21T09:37:37Z",
            "versions": [
                "1.0.2"
            ],
            "source": "amazon-inspector",
            "import_time": "2026-05-26T05:51:19.731201257Z"
        },
        {
            "source": "amazon-inspector",
            "sha256": "f78bad20b316dad1568a74ff372d2d5e955bd658ccf93bd814e2939c3a0b8216",
            "import_time": "2026-05-26T05:52:56.064951496Z",
            "modified_time": "2026-05-25T08:35:42Z",
            "id": "IN-MAL-2026-004607",
            "versions": [
                "1.0.5"
            ]
        },
        {
            "versions": [
                "1.0.1"
            ],
            "sha256": "a8bb3bd4e143aaf8df6d3d54eedb9f36d7f156c59775eed35a21de8d33b253a3",
            "import_time": "2026-05-26T05:51:19.284239093Z",
            "modified_time": "2026-05-21T09:15:41Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-003791"
        },
        {
            "modified_time": "2026-05-26T08:33:56Z",
            "sha256": "d9818578428bc38b7bd3f5e4546e4d14d0ebe9709b9fea08cd359a3f99e84d46",
            "versions": [
                "1.0.6"
            ],
            "import_time": "2026-05-26T09:17:32.39634727Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-004872"
        },
        {
            "source": "amazon-inspector",
            "sha256": "577aa4c42e8931b5a638758260beaa8efade008231a95c06a0c0b7829655bb7b",
            "import_time": "2026-06-12T19:43:55.604416996Z",
            "modified_time": "2026-06-12T19:06:45Z",
            "id": "IN-MAL-2026-005990",
            "versions": [
                "1.0.7"
            ]
        },
        {
            "modified_time": "2026-06-29T16:36:25Z",
            "sha256": "595cbb63f10b51d521487fcdfe110eb8ffd5dabe512f96a960d43c89fee1b2be",
            "import_time": "2026-06-29T17:14:01.235957598Z",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "source": "ghsa-malware",
            "id": "GHSA-4cmw-88qw-qcpr"
        }
    ]
}
References
Credits

Affected packages

npm / http-uploader-dev

Package

Name
http-uploader-dev
View open source insights on deps.dev
Purl
pkg:npm/http-uploader-dev

Affected ranges

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

Affected versions

1.*
1.0.0
1.0.1
1.0.2
1.0.3
1.0.5
1.0.6
1.0.7

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "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",
        "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",
        "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",
        "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."
    }
]
indicators 
{
    "package_integrity": [
        {
            "filename": "http-uploader-dev-1.0.3.tgz",
            "hashes": {
                "sha1": "94e48058681c401fba7de9a6545d65df48b718e4",
                "sha512_sri": "sha512-AzrPDH2ly7783OGYsCgJcpsULrdvVc36C0mHjfkzcEPhg2zfNPDcSxksfPbI1ZNa0XaqM3nOsHCGBsljGyY3hQ=="
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "b1f084e09afad730aa7518a36e8a11a561a39027240afb9c30898386ab9416402b0cf5",
            "sha256": "522164d64f61e40a5602b8090c2e161954c668915725d63acc2752adfe2db81e",
            "path": "index.js"
        },
        {
            "tlsh": "c0e0d8b4c8219c732dd04b288929594662a48f3b40453c0a73db108c9ade5b714ff14e",
            "sha256": "99a72d6da2467bc9ce3b6be5f8b241558b24d792d264116990a2a3a835594c9b",
            "path": "package.json"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/http-uploader-dev/MAL-2026-4580.json"