CVE-2026-106552
Publication date 7 October 2026
Last updated 14 October 2026
Ubuntu priority
Description
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| openssh | 26.04 LTS resolute |
Fixed 1:10.2p1-2ubuntu3.8
|
| 24.04 LTS noble |
Fixed 1:9.6p1-3ubuntu13.20
|
|
| 22.04 LTS jammy |
Fixed 1:8.9p1-3ubuntu0.18
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
|
| 14.04 LTS trusty |
Needs evaluation
|
|
| openssh-ssh1 | 26.04 LTS resolute | Ignored |
| 24.04 LTS noble | Ignored | |
| 22.04 LTS jammy | Ignored | |
| 20.04 LTS focal | Ignored | |
| 18.04 LTS bionic | Ignored | |
| openssh-gssapi | 26.04 LTS resolute | Not in release |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release |
Notes
mdeslaur
openssh-ssh1 is only provided for compatibility with old devices that cannot be upgraded to modern protocols. We will not be providing any security support for the openssh-ssh1 package as it is insecure and should be used in trusted environments only.
Severity score breakdown
CVSS version: CVSS v3.0
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
References
Related Ubuntu Security Notices (USN)
- USN-8928-1
- OpenSSH vulnerabilities
- 14 October 2026