CVE-2026-59851

HIGH SEVERITY

CVSS Score & Metrics

Base Score

8.8 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H                                    

Vulnerability 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.

Vulnerability Details

Published Date

July 21, 2026

Last Modified

July 22, 2026

CWE ID

CWE-863

Source

NVD

Vendor

Red Hat

Product

Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Hardened Images

External References

https://access.redhat.com/security/cve/CVE-2026-59851
https://bugzilla.redhat.com/show_bug.cgi?id=2498184

CVE-2026-59851

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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