QSearchQSearch

CVE-2026-46705

5.3 MEDIUM

Russh is a Rust SSH client & server library

Published: 2026-06-10 · Last updated: 2026-06-10

Severity and scoring

CVSS
5.3 MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE
CWE-287

Description

Russh is a Rust SSH client & server library. From version 0.34.0-beta.1 to before version 0.61.0, the russh server authentication path keeps internal userauth state across SSH_MSG_USERAUTH_REQUEST messages without separating that state when the request principal changes. RFC 4252 allows the user name and service name fields to change between authentication requests. The issue is not that such changes are invalid. The issue is that russh-owned authentication state, such as remaining methods, partial-success state, and in-progress method state, can remain associated with the connection and then influence a later request for a different (user, service). This is an internal library state mismatch. This issue has been patched in version 0.61.0.

Source: NVD

References

Related CVEs

Same CWE

  • CVE-2026-47166 — ImageMagick is free and open-source software used for editing and manipulating digital images (5.7 MEDIUM)
  • CVE-2022-48575 — A person with access to a Mac may be able to bypass Login Window (3.5 LOW)
  • CVE-2026-45567 — Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers (8.3 HIGH)
  • CVE-2026-47838 — SubjectDnX509PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wr... (6.8 MEDIUM)
  • CVE-2026-36727 — An insecure authentication vulnerability in the /api/social-sign-in endpoint of bookcars v8.3 allows attackers to bypass authentication v... (9.1 CRITICAL)