What is CVE-2026-106552?

CVE-2026-106552 is a medium-severity vulnerability in OpenBSD OpenSSH, classified under Relative Path Traversal. CVSS score: 4.2/10. Published 2026-10-06.

How severe is CVE-2026-106552?

Medium severity. CVSS v3 base score is 4.2 out of 10.

Path Traversal in OpenBSD OpenSSH

CVE-2026-106552

In sftp in OpenSSH before 10.6, a server can trigger directory traversal (causing files to be written to unintended locations) during a recursive copy operation.

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

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L.

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-23 — Relative Path Traversal

References

www.openssh.org/releasenotes.html

Frequently asked questions

What is CVE-2026-106552?: CVE-2026-106552 is a medium-severity vulnerability in OpenBSD OpenSSH, classified under Relative Path Traversal. CVSS score: 4.2/10. Published 2026-10-06.
How severe is CVE-2026-106552?: Medium severity. CVSS v3 base score is 4.2 out of 10.