Report: CVE-2026-42189 - Russh: Pre-auth DoS via unbounded allocation in keyboard-interactive auth - Guide

Report: CVE-2026-42189 - Russh: Pre-auth DoS via unbounded allocation in keyboard-interactive auth - Guide

CVE ID :CVE-2026-42189 Published : May 8, 2026, 8:16 p.m. | 1 hour, 23 minutes ago Description :Russh is a Rust SSH client & server library. Prior to version 0.60.1, a pre-authentication denial-of-service vulnerability exists in the server's keyboard-interactive authentication handler. A malicious client can crash any russh-based server that implements keyboard-interactive auth (e.g., for 2FA/TOTP) with a single malformed packet, requiring no credentials. This issue has been patched in version 0.60.1. Severity: 7.5 | HIGH Visit the link for more details, such as CVSS details, affected products, timeline, and more...

CVE Details

Severity
HIGH
Published
May 8, 2026