What is CVE-2026-106586?

CVE-2026-106586 is a low-severity vulnerability in OpenBSD OpenSSH, classified under Always-Incorrect Control Flow Implementation. CVSS score: 2.5/10. Published 2026-10-06.

How severe is CVE-2026-106586?

Low severity. CVSS v3 base score is 2.5 out of 10.

Vulnerability in OpenBSD OpenSSH

CVE-2026-106586

In sshd in OpenSSH before 10.6, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not, a different vulnerability than CVE-2026-73283.

Published 2026-10-06 · last modified 2026-10-07.

CVSS v3 metric

CVSS v3 base score 2.5 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

OpenBSD OpenSSH

Weakness classification (CWE)

CWE-670 — Always-Incorrect Control Flow Implementation

References

www.openssh.org/releasenotes.html

Frequently asked questions

What is CVE-2026-106586?: CVE-2026-106586 is a low-severity vulnerability in OpenBSD OpenSSH, classified under Always-Incorrect Control Flow Implementation. CVSS score: 2.5/10. Published 2026-10-06.
How severe is CVE-2026-106586?: Low severity. CVSS v3 base score is 2.5 out of 10.