CVE-2026-59995 Path traversal in OpenSSH

Medium 4.2 Published 8 Jul 2026 Updated 8 Jul 2026

An attacker-controlled SFTP server can write files to arbitrary locations on the client system during download operations.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2026-59995?

CVE-2026-59995 is a medium-severity path traversal vulnerability in OpenSSH, published on 8 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

sftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when "sftp server:/path ." is used with an attacker-controlled server.

Weakness: CWE-23

Which versions are affected by CVE-2026-59995?

It affects 1 product.

Products include OpenSSH.

How do I fix CVE-2026-59995?

Upgrade to a fixed version.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-59995 being exploited?

There is no known exploitation of CVE-2026-59995 in the wild and no public exploit code.

All OpenSSH vulnerabilities

Sources

Also known as ALPINE-CVE-2026-59995, AZL-92042, BELL-CVE-2026-59995, DEBIAN-CVE-2026-59995, ECHO-086a-cd07-bc73, GHSA-2prh-86cw-fm96 and 5 more.