CVE-2026-123158

OpenBSD OpenSSH Unexpected Status Code or Return Value Vulnerability

OpenSSH

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.

5. Nov 2026

Ausgewertete Quellen

• Red Hat
  Red Hat
• Hersteller
  https://marc.info/?l=openssh-unix-dev&m=179388064263131&w=2
• Hinweis
  https://alpinelinux.org/posts/2026-11-05-openssh-password-authentication-bypass/
• Hinweis
  https://hachyderm.io/@damienmiller/117563026759098135
• Hinweis
  https://sshhole.com
• Hinweis
  https://sshole.events.greynoise.io/
• CISA
  https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-123158
• CISA
  OpenBSD OpenSSH Unexpected Status Code or Return Value Vulnerability
• NVD
  CVE-2026-123158
• GitHub
  https://github.com/coollabsio/coolify/discussions/12484
• GitHub
  https://github.com/google/goonami-scanner/pull/277
• GitHub
  https://github.com/leonjza/sshhole-lab
• GitHub
  https://github.com/panubo/docker-sshd/issues/93
• GitHub
  https://github.com/predkambrij/sshhole-repro