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.
CVE-2026-123158 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-123158, released November 9, 2026. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on November 9, 2026. Patch Radar priority: Patch now.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| openssh · Debian 14 | 1:10.6p2-1 | DEBIAN-CVE-2026-123158 | Nov 9, 2026 |
| openssh-gssapi · Debian 14 | 1:10.6p2-1 | DEBIAN-CVE-2026-123158 | Nov 9, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.