Missing Authentication for Critical Function Affecting openssh-server package, versions <0:7.4p1-22.amzn2.0.13


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.13% (3rd percentile)

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  • Snyk IDSNYK-AMZN2-OPENSSHSERVER-16881579
  • published27 May 2026
  • disclosed2 Apr 2026

Introduced: 2 Apr 2026

CVE-2026-35388  (opens in a new tab)
CWE-306  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 openssh-server to version 0:7.4p1-22.amzn2.0.13 or higher.
This issue was patched in ALAS2-2026-3320.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh-server package and not the openssh-server package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.

CVSS Base Scores

version 3.1