CVE-2026-59851

Published Jul 21, 2026

Last updated 21 hours ago

Overview

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.
Source
secalert@redhat.com
NVD status
Analyzed
Products
libssh, hardened_images, enterprise_linux

Risk scores

CVSS 3.1

Type
Secondary
Base score
8.8
Impact score
5.9
Exploitability score
2.8
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

secalert@redhat.com
CWE-863

Social media

Hype score
Not currently trending

Configurations