MAL-2026-4859

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/telethon-pro-safe/MAL-2026-4859.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-4859
Published
2026-05-28T17:50:39Z
Modified
2026-05-28T21:30:57.022971072Z
Summary
Malicious code in telethon-pro-safe (PyPI)
Details

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

Source: kam193 (8bc2e515c2eb7bf73ea5d532cfb6701dcaf3dd95e9d8248ee3d426b1d0c1ed8c)

During installation, package executes obfuscated code that starts a RAT-like software allowing remote control and exfiltrating sensitive data.

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-05-telethon-pro-safe

Reasons (based on the campaign):

  • rat

  • The package overrides the install command in setup.py to execute malicious code during installation.

  • exfiltration-credentials

  • exfiltration-browser-data

  • The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.

  • The package contains code to detect if it is running in a sandbox environment.

  • The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.

  • infostealer

  • obfuscation

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "pypi/2026-05-telethon-pro-safe/telethon-pro-safe",
            "modified_time": "2026-05-28T17:50:39.568931Z",
            "sha256": "8bc2e515c2eb7bf73ea5d532cfb6701dcaf3dd95e9d8248ee3d426b1d0c1ed8c",
            "versions": [
                "3.0.0",
                "3.0.1",
                "3.0.2",
                "3.0.3",
                "3.0.4"
            ],
            "source": "kam193",
            "import_time": "2026-05-28T19:25:24.080697697Z"
        },
        {
            "import_time": "2026-05-28T21:15:43.330573907Z",
            "modified_time": "2026-05-28T17:50:39.568931Z",
            "sha256": "547838db16ca725408f22270caf4e4e1517d67c7b362784921367678ead4bd51",
            "id": "pypi/2026-05-telethon-pro-safe/telethon-pro-safe",
            "source": "kam193",
            "versions": [
                "3.0.0",
                "3.0.1",
                "3.0.2",
                "3.0.3",
                "3.0.4"
            ]
        }
    ]
}
References
Credits

Affected packages

PyPI / telethon-pro-safe

Package

Name
telethon-pro-safe
View open source insights on deps.dev
Purl
pkg:pypi/telethon-pro-safe

Affected ranges

Affected versions

3.*
3.0.0
3.0.1
3.0.2
3.0.3
3.0.4

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/telethon-pro-safe/MAL-2026-4859.json"