OpenSSH sshd Vulnerability in Authorized Keys Allowing Tunnel Forwarding Exploits
CVE-2026-73283

2.5LOW

Key Information:

Vendor

OpenBSD
Status
Openssh
Vendor
CVE Published:
11 August 2026

What is CVE-2026-73283?

A security misconfiguration in OpenSSH's sshd prior to version 10.5 allows the 'restrict' keyword in authorized_keys to fail in limiting tunnel forwarding as intended. This oversight exposes systems to potential unauthorized access and exploitation, compromising the integrity of secure shell communications and data transport.

Affected Version(s)

OpenSSH 0 < 10.5

References

https://www.openssh.org/releasenotes.html#10.5

CVSS V3.1

Score:
2.5
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.