Attackers Target Rejetto HFS Flaw That Enables Admin Session Forgery and RCE

What the source reports

A critical security flaw impacting Rejetto HTTP File Server (HFS) is witnessing active exploitation attempts, according to VulnCheck. The vulnerability in question is CVE-2026-61500 (CVSS score: 9.3), a case of session forgery stemming from the use of a weak pseudo-random number generator (PRNG) that can lead to a predictable key, which an attacker can then use to gain unauthorized access and

This dispatch is based on reporting from The Hacker News. The original publication should be read for the complete context, named sources, dates, and qualifications.

Why it matters

The development is relevant to the way technology is built, secured, governed, or used. Readers should distinguish the reported facts from any interpretation added during editorial review.

The original source remains the authority for the underlying report.

OnBytr’s role is to provide a concise, source-linked explanation and identify the practical question worth watching next. This post is an editorial summary, not a substitute for the original reporting.