Path traversal in OpenSSH - CVE-2026-106552
Published: October 28, 2026
Vulnerability identifier: #VU158338
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-106552
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to write files outside the intended destination directory.
The vulnerability exists due to path traversal in the sftp client when processing server-supplied paths during a recursive copy. A remote attacker can operate a malicious server that returns crafted paths to redirect file writes outside the target directory.
Affected software
OpenSSH
How to mitigate CVE-2026-106552
Install security update from vendor's website.
OpenSSH - update to 10.6p1