CVE-2026-73283

openssh: OpenSSH: Tunnel forwarding restriction bypass

Published Aug 11, 2026 CVSS 3.1 · 2.5 Low EPSS < 1% KEV · Not listed
Description
In sshd in OpenSSH before 10.5, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title OpenSSH restrict keyword ineffective for tunnel forwarding openssh: OpenSSH: Tunnel forwarding restriction bypass
Weaknesses CWE-305
References
Metrics threat_severity

None

threat_severity

Moderate

Type Values Removed Values Added
Title OpenSSH restrict keyword ineffective for tunnel forwarding
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description In sshd in OpenSSH before 10.5, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not.
First Time appeared Openbsd
Openbsd openssh
Weaknesses CWE-670
CPEs cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
Vendors & Products Openbsd
Openbsd openssh
References
Metrics cvssV3_1

{'score': 2.5, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 11, 2026, 8:16 PM
Reserved
Aug 11, 2026, 7:15 PM
Status
Analyzed
Published
Aug 11, 2026, 8:18 PM
Modified
Oct 24, 2026, 3:10 PM
Severity
Moderate
Public date
Aug 11, 2026, 7:15 PM