A flaw was found in libssh. Logic errors in automatic certificate-based public key authentication can cause libssh clients to loop indefinitely when configured certificates are missing or repeatedly rejected by a server, leading to denial of service.
{
"cna_assigner": "redhat",
"cwe_ids": [
"CWE-835"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59849.json"
}{
"cpe": [
"cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*",
"cpe:2.3:a:libssh:libssh:0.12.0:*:*:*:*:*:*:*"
],
"extracted_events": [
{
"introduced": "0.11.0"
},
{
"fixed": "0.11.5"
},
{
"introduced": "0.12.0"
},
{
"last_affected": "0.12.0"
}
],
"source": [
"CPE_RANGE",
"CPE_STRING"
]
}