CVE-2026-48107
Medium · 6.5CVSS
6.5
EPSS
0.4%
Published
Jun 10, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| crates.io | russh | 0.37.0 | 0.61.0 |
Related vulnerabilities
- GHSA-g9g7-5cgw-6v28 Russh: Unchecked keyboard-interactive prompt count in client auth path Same vulnerability
- GHSA-4r3c-5hpg-58qr Russh SSH message fields were decoded through allocation-first parsers before… Also affects russh
- GHSA-76r6-x97p-67vr Russh: SSH identification parsing accepted non-canonical client banners and did not bound… Also affects russh
- CVE-2026-48108 Russh is a Rust SSH client & server library. Also affects russh
- CVE-2026-48110 Russh is a Rust SSH client & server library. Also affects russh
- CVE-2026-46702 Russh is a Rust SSH client & server library. Also affects russh
- CVE-2026-46705 Russh is a Rust SSH client & server library. Also affects russh
- CVE-2026-46673 Russh is a Rust SSH client & server library. Also affects russh