CVE-2026-35387: OpenBSD OpenSSH

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.

Affected products

• OpenBSD OpenSSH: before 10.3 (fixed in 10.3)

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