Exposure of Data Element to Wrong Session Affecting openssh-keycat-debuginfo package, versions <0:9.9p1-16.amzn2023.0.1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.14% (3rd percentile)

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  • Snyk IDSNYK-AMZN2023-OPENSSHKEYCATDEBUGINFO-22102918
  • published31 Oct 2026
  • disclosed6 Oct 2026

Introduced: 6 Oct 2026

CVE-2026-106555  (opens in a new tab)
CWE-488  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 openssh-keycat-debuginfo to version 0:9.9p1-16.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-3354.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh-keycat-debuginfo package and not the openssh-keycat-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

In sshd in OpenSSH before 10.6, GSSAPIAuthentication authentication state can incorrectly be persisted across authentication attempts.

CVSS Base Scores

version 3.1