CVE-2026-102825

Published: Sep 29, 2026Modified: Sep 30, 2026Deferred

3.7

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitability: 2.2 / Impact: 1.4

Source: security-advisories@github.com (Secondary)

Description

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.

Related CWEs

CWE-307

Improper Restriction of Excessive Authentication Attempts

The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it more susceptible to brute force attacks.

References (4)

https://github.com/Eugeny/russh/commit/f8fd0b11a393364dc7f01a182482d86adafdd653

Source: security-advisories@github.com

https://github.com/Eugeny/russh/releases/tag/v0.62.6

Source: security-advisories@github.com

https://github.com/Eugeny/russh/security/advisories/GHSA-g6xm-f9xp-qq35

Source: security-advisories@github.com

https://github.com/Eugeny/russh/security/advisories/GHSA-g6xm-f9xp-qq35

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.