CVE-2026-123158
High
Description
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.
SeverityHigh
CVSS8.1
Exploit probability—
ProductOpenSSH
PublishedNov 5, 2026
First seenNov 5, 2026
Weakness typeCWE-394CWE-394
How to fix
Update
- OpenBSD OpenSSH10.6p2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| OpenBSD OpenSSH | v < 10.6p2 | 10.6p2 |
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