Security· ★★· bearish·

Anthropic's Mythos AI helped find a Rejetto HFS flaw that is already being exploited

  • —CVE-2026-61500 affects Rejetto HFS versions prior to 3.2.1
  • —The flaw allows cookie forgery and potential admin access and code execution
  • —VulnCheck saw attacks from one China-hosted IP and two US IPs
  • —The vulnerability was identified with help from Anthropic's Mythos AI model
Why it matters: Exploitation began shortly after disclosure, so HFS administrators should update to 3.2.1 immediately.
Source: DiarioBitcoin