CVE-2026-35388: OpenBSD OpenSSH

Low severity, CVSS 2.5. EPSS: 0.2% chance of exploitation in the next 30 days.

OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.

Affected products

• OpenBSD OpenSSH: before 10.3 (fixed in 10.3)

Published 2026-04-02. Last modified 2026-07-24.