VULNERABILITY INTELLIGENCE

CVE-2026-48107

CVSS score6.5 MEDIUM
EPSS probability0.23%
CISA KEVNot currently listed
Published2026-06-10
Last modified2026-07-23
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • CWE-20: Improper Input Validation

Primary references