Shell Injection Vulnerability in libssh Affects Multiple Products
CVE-2026-59846

3.9LOW

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Red Hat Hardened Images
Vendor
CVE Published:
21 July 2026

What is CVE-2026-59846?

A vulnerability in libssh allows for injection of shell metacharacters via a maliciously crafted username in the ProxyCommand configuration. This flaw can exploit the handling of input, potentially revealing environment variables and executing unintended shell commands, leading to security breaches. As such, users of affected versions should take immediate precautions to mitigate risks.

References

https://access.redhat.com/security/cve/CVE-2026-59846
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2498179
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
3.9
Severity:
LOW
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Mikhail Ilin and Saransh Rana for reporting this issue.
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