CVEvulnerability
CVE-2026-59851
8.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2026-07-21
- Last modified
- 2026-08-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-863
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.
Affected configurations
• libssh libssh
• redhat hardened images
• redhat enterprise linux 10.0
Related
Weakness · CWE (1)
- CWE-863 Incorrect Authorization weakness
References
- https://access.redhat.com/errata/RHSA-2026:42922 Issue Tracking
- https://access.redhat.com/errata/RHSA-2026:55855 access.redhat.com
- https://access.redhat.com/security/cve/CVE-2026-59851 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2498184 Issue Tracking, Vendor Advisory