CVE-2026-59851

Name of the Vulnerable Software and Affected Versions libssh (affected versions not specified)

Description A flaw exists in the gssapi-keyex path on servers where GSSAPIKeyExchange is enabled. The system fails to verify if the authenticated Kerberos principal is authorized for the requested local user, which allows authenticated clients to log in as arbitrary users.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.