CVE-2026-48107 — Russh: Unchecked keyboard-interactive prompt count in client auth path
Russh is a Rust SSH client & server library. From version 0.37.0 to before version 0.61.0, in the russh client keyboard-interactive authentication path, a malicious SSH server c…
Published: 2026-06-10 · CVSS: 6.5 · CVSS 3.1
Russh is a Rust SSH client & server library. From version 0.37.0 to before version 0.61.0, in the russh client keyboard-interactive authentication path, a malicious SSH server could send a USERAUTH_INFO_REQUEST with an attacker-controlled prompt count, and the client would use that raw count directly in Vec::with_capacity(...) before validating that enough prompt data was actually present in the packet. This issue has been patched in version 0.61.0.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7