cvedb.io
CVE-2026-42189
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-05-08T20:16:31.443 · Last modified 2026-06-17T10:47:29.173

Summary

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.

Affected products

russh_project — russh

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.