Sensitive Information in Resource Not Removed Before Reuse in OpenSSH - CVE-2026-106553
Published: October 28, 2026
Vulnerability identifier: #VU158339
CSH Severity: Low
CVSS v4: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-106553
CWE-ID: CWE-226
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to obtain inappropriate access to credentials retained from a failed authentication attempt.
The vulnerability exists due to improper credential lifecycle management in sshd when a failed GSSAPI authentication attempt is followed by successful authentication using another method. A remote user can complete a subsequent authentication to potentially access GSSAPI credentials that should not have been retained.
Affected software
OpenSSH
How to mitigate CVE-2026-106553
Install security update from vendor's website.
OpenSSH - update to 10.6p1