---
id: CVE-2026-106553
title: >-
  In sshd in OpenSSH before 10.6, credentials can incorrectly persist after
  failure of a GSSAPIAuthentication authentication attempt.
summary: >-
  In sshd in OpenSSH before 10.6, credentials can incorrectly persist after
  failure of a GSSAPIAuthentication authentication attempt.
severity: low
cvss: 2.2
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N'
cwe:
  - CWE-669
  - CWE-459
vendor: openbsd
product: openssh
affected:
  - openssh < 10.6
patched:
  - openssh 10.6
published: '2026-10-06'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T15:26:43.823'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106553'
references:
  - url: 'https://www.openssh.org/releasenotes.html#10.6'
    label: cve@mitre.org
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106553.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-106553'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2547191'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-106553'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106553'
  - url: 'https://access.redhat.com/errata/RHSA-2026:84849'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00136
epssPercentile: 0.03096
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-07T16:22:41.442164Z'
ingestedAt: '2026-10-06T21:20:28.987Z'
---

## Overview

In sshd in OpenSSH before 10.6, credentials can incorrectly persist after failure of a GSSAPIAuthentication authentication attempt.

## Affected

- `openssh < 10.6`

## Remediation

Upgrade past the affected range:

- `openssh 10.6`

## Vendor advisories

- **RHSA-2026:84849** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:84849)
- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106553.json)