What is CVE-2026-35387?

CVE-2026-35387 is a low-severity vulnerability in Openbsd Openssh, classified under Always-Incorrect Control Flow Implementation. CVSS score: 3.1/10. Published 2026-04-02.

How severe is CVE-2026-35387?

Low severity. CVSS v3 base score is 3.1 out of 10.

Vulnerability in Openbsd Openssh

CVE-2026-35387

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.

EPSS: 0.001 (16.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N.

Affected products

Openbsd Openssh — versions 0

Weakness classification (CWE)

CWE-670 — Always-Incorrect Control Flow Implementation

References

www.openssh.org/releasenotes.html
marc.info/
www.openwall.com/lists/oss-security/2026/04/02/3

Frequently asked questions

What is CVE-2026-35387?: CVE-2026-35387 is a low-severity vulnerability in Openbsd Openssh, classified under Always-Incorrect Control Flow Implementation. CVSS score: 3.1/10. Published 2026-04-02.
How severe is CVE-2026-35387?: Low severity. CVSS v3 base score is 3.1 out of 10.