OS Command Injection Affecting openssh package, versions <1:9.6p1-3ubuntu1


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
19.75% (98th percentile)

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  • Snyk IDSNYK-UBUNTU2604-OPENSSH-16221397
  • published24 Apr 2026
  • disclosed18 Dec 2023

Introduced: 18 Dec 2023

CVE-2023-51385  (opens in a new tab)
CWE-78  (opens in a new tab)

How to fix?

Upgrade Ubuntu:26.04 openssh to version 1:9.6p1-3ubuntu1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh package and not the openssh package as distributed by Ubuntu. See How to fix? for Ubuntu:26.04 relevant fixed versions and status.

In ssh in OpenSSH before 9.6, OS command injection might occur if a user name or host name has shell metacharacters, and this name is referenced by an expansion token in certain situations. For example, an untrusted Git repository can have a submodule with shell metacharacters in a user name or host name.

CVSS Base Scores

version 3.1