Security Advisory

CVE-2026-59851

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-21 14:20:47

Last updated 2026-08-17 21:38:10

Assigner redhat

CVSS score 8.8

State PUBLISHED

Description

A flaw was found in libssh. On servers with GSSAPIKeyExchange enabled, the gssapi-keyex path does not verify whether the authenticated Kerberos principal is authorized for the requested local user, allowing authenticated clients to log in as arbitrary users.

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