sshd in OpenSSH before 10.6p2 on Linux, when musl libc is used without PAM, lacks a workaround for a password authentication bypass (related to misinterpretation of whether a string is intended to be a password hash). For some configurations of accounts, any password between 256 and 1024 characters succeeds. An example of a platform using musl libc without PAM is Alpine Linux.
{
"cna_assigner": "mitre",
"cwe_ids": [
"CWE-394"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123158.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"fixed": "10.6p2"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
},
{
"extracted_events": [
{
"range": [
{
"fixed": "10.6p2"
}
],
"source": "CPE_FIELD",
"strategy": "CPEApplicability"
}
]
},
{
"extracted_events": [
{
"range": [
{
"fixed": "10.6p2"
}
],
"source": "DESCRIPTION"
}
]
}
]
}{
"extracted_events": [
{
"range": [
{
"fixed": "4353fdc43ef646c43a8dda7025cc1a898caf1482"
}
],
"source": "REFERENCES_COMMIT"
}
]
}