Hacker News — 2026-05-01#
Top Story#
The Internet Is Falling Down- CPanel/WHM Authentication Bypass CVE-2026-41940
The most critical alert of the day is a zero-day authentication bypass in cPanel and WHM, effectively handing over the keys to the management plane for roughly 70 million domains. The vulnerability impacts all currently supported versions of cPanel & WHM, and active in-the-wild exploitation is already underway. The bug boils down to an embarrassing failure to sanitize \r\n characters in session loading, allowing attackers to inject raw payload lines directly into session files. If you run shared hosting infrastructure, you needed to patch yesterday.