MAL-2026-18271

    Dashboard / Malicious Package / MAL-2026-18271

    MAL-2026-18271

    Published: 25 Oct 2026Last Modified: 29 Oct 2026

    Summary: Malicious code in fontus (PyPI)

    Details: Source: amazon-inspector (bb5b8b4484126f787f9917d91b6815927146a308f64bfb852c57f5d60bf4bfbb) Analysis of fontus 0.0.3 on PyPI did not identify any code paths that exfiltrate installer data, execute attacker-controlled payloads at install or import time, relay caller-supplied data to third-party destinations, distribute live credentials, or establish persistence. No install-time network fetches, no lifecycle shell execution, no reads of credential paths (~/.aws, ~/.ssh, ~/.npmrc, browser profiles), and no obfuscated or dynamic-exec patterns were observed. Source: kam193 (2a8fcff0fd4d827c6f174318ee41ea82eb2667c6d65349a01ca2215aa2f4dd5e) The package most likely performs fingerprinting by exfiltrating basic information and available fonts, with no other functionality. Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities. Campaign: 2026-10-fontus Reasons (based on the campaign): - The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.

    References: https://bad-packages.kam193.eu/pypi/package/fontus, https://pypi.org/project/fontus/0.0.2/, https://pypi.org/project/fontus/0.0.1/, https://pypi.org/project/fontus/0.0.3/

    Affected packages

    Package

    Name: fontus

    Purl: pkg:pypi/fontus

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    0.0.1
    0.0.2
    0.0.3