CVE-2026-48107

Summary

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.

Affected Software

VendorProductVersion RangeStatus
Eugenyrussh>= 0.37.0, < 0.61.0affected

Weaknesses

  • CWE-20: CWE-20: Improper Input Validation

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References