Resource exhaustion in Eugeny Russh
CVE-2026-42189
Russh is a Rust SSH client & server library. Prior to version 0.60.1, a pre-authentication denial-of-service vulnerability exists in the server's keyboard-interactive authentication handler. A malicious client can crash any russh-based ser…
EPSS: 0.002 (40.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Eugeny Russh — versions < 0.60.1
- Russh_project Russh
- Warpgate_project Warpgate
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-42189?
- CVE-2026-42189 is a high-severity vulnerability in Eugeny Russh, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-05-08.
- How severe is CVE-2026-42189?
- High severity. CVSS v3 base score is 7.5 out of 10.