CVE-2026-102825
CVE-2026-102825 · Russh: Configured server auth-attempt cap is not enforced in the USERAUTH_REQUEST runtime path
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Russh is a Rust SSH client and server library. Prior to 0.62.6, the USERAUTH_REQUEST path reached from server::run_stream in russh/src/server/encrypted.rs increments self.common.auth_attempts but never compares it with server::Config.max_auth_attempts. An unauthenticated remote client can continue submitting authentication requests on one connection beyond the configured cap, bypassing the deployment's attempt-limiting policy and increasing online guessing opportunity and backend authentication workload. This issue is fixed in version 0.62.6.
CVSS 3.7 · Low · EPSS 0.4% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
russh
- Versions
- < 0.62.6: Affected
No fix published
rust-russh Debian:14
- Versions
- 0.57.1-1
- 0.57.1-2
- Affected ranges
- ECOSYSTEM: < 0.64.1-1
Update to 0.64.1-1
rust-russh Ubuntu:26.10
- Versions
- 0.57.1-2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published