OpenSSH Issues Emergency Fix for Flaw Letting Long Passwords Bypass SSH Auth on Alpine Linux

thehackernews.com Nov 5, 2026

OpenSSH Issues Emergency Fix for Flaw Letting Long Passwords Bypass SSH Auth on Alpine Linux

Curated by Shubham · TechCapsules · Nov 5, 2026

AI-summarised brief · reviewed before publication

A critical vulnerability in OpenSSH allows attackers to log into password‑less accounts on Alpine Linux servers that use the default openssh‑server package without PAM. By supplying a password between 257 and 1,024 bytes, an attacker who knows a valid username can bypass authentication whenever password logins are enabled and at least one other account on the system has a password. The flaw stems from how sshd interacts with musl, Alpine’s C library, and affects only musl‑based builds that lack PAM. OpenSSH released version 10.6p2 to block the exploit, and Alpine issued patched packages for releases back to 3.16. Administrators are urged to disable PasswordAuthentication or update immediately; no active exploits have been reported.

💡 Why It Matters

· Exploiting the bug grants immediate root‑level access on vulnerable cloud images, turning otherwise secure key‑only accounts into open doors.

Capsules Cybersecurity

Read full article on thehackernews.com

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thehackernews.com · Nov 5

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9to5mac.com · Nov 5

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thehackernews.com · Nov 5

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