Issued at: 2026-10-23
Updated at: 2026-10-23
Advisory content derived from Red Hat RHSA-2026:88211, © Red Hat, Inc., used under CC BY 4.0, with modifications.
Synopsis
Moderate: openssh security update
Description
OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server.
Security Fix(es):
* openssh: OpenSSH: SFTP security bypass due to command-line argument parsing flaw (CVE-2026-59997)
* openssh: OpenSSH: Undocumented GSSAPIStrictAcceptorCheck behavior impacts security in Windows Active Directory (CVE-2026-59998)
* openssh: OpenSSH: Brute-force attacks facilitated due to insufficient authentication delay (CVE-2026-60001)
* openssh: OpenSSH: Denial of Service via excessive GSSAPI authentication attempts (CVE-2026-60000)
* openssh: OpenSSH: Tunnel forwarding restriction bypass (CVE-2026-73283)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.