CVE-2026-73283 Security feature bypass in OpenSSH

Low 2.5 Published 11 Aug 2026 Updated 11 Aug 2026

Attackers can bypass the restrict keyword in authorized_keys to enable tunnel forwarding, undermining intended SSH security controls.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2026-73283?

CVE-2026-73283 is a low-severity vulnerability in OpenSSH, published on 11 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-670

Which versions are affected by CVE-2026-73283?

It affects 1 product.

Products include OpenSSH.

How do I fix CVE-2026-73283?

Upgrade to a fixed version.

Is CVE-2026-73283 being exploited?

There is no known exploitation of CVE-2026-73283 in the wild and no public exploit code.

All OpenSSH vulnerabilities

Sources

Also known as ALPINE-CVE-2026-73283, AZL-95532, BELL-CVE-2026-73283, CLSA-2026-1788887546, DEBIAN-CVE-2026-73283, ECHO-21bc-cdd7-001e and 3 more.