Unprotected Alternate Channel Affecting openssh-server package, versions <0:9.9p1-14.el10_1.rocky.0.1


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.23% (13th percentile)

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  • Snyk IDSNYK-ROCKY10-OPENSSHSERVER-16794460
  • published22 May 2026
  • disclosed2 Apr 2026

Introduced: 2 Apr 2026

CVE-2026-35388  (opens in a new tab)
CWE-420  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:10 openssh-server to version 0:9.9p1-14.el10_1.rocky.0.1 or higher.
This issue was patched in RLSA-2026:13380.

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 Rocky-Linux. See How to fix? for Rocky-Linux:10 relevant fixed versions and status.

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

CVSS Base Scores

version 3.1