Vulnerability Details CVE-2026-59851
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 41.2%
CVSS Severity
CVSS v3 Score 8.8
References
Products affected by CVE-2026-59851
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cpe:2.3:a:libssh:libssh:-
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cpe:2.3:a:redhat:hardened_images:-
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cpe:2.3:o:redhat:enterprise_linux:10.0