Upscaler-4K Malicious Node Pack Post Mortem

Between October 17th and 19th, 2024, a malicious actor uploaded two node packs containing malware to the Comfy Registry, which were subsequently downloaded 790 times before being banned. The Registry team, prompted by an automated security scanner and a manual review, banned the malicious versions on October 21st, 2025. During this period, a third node pack with a similar name was created by a different user. On October 21st, an internal security scanner identified suspicious code patterns in the initial node packs, and the registry maintainer confirmed the presence of malware, leading to the ban of all affected versions from the Comfy Node Registry.

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