In sshd in OpenSSH before 10.6, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not, a different vulnerability than CVE-2026-73283.
Weakness
The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openssh-ssh1 | Ubuntu | devel | * |
| Openssh-ssh1 | Ubuntu | esm-apps/bionic | * |
| Openssh-ssh1 | Ubuntu | esm-apps/focal | * |
| Openssh-ssh1 | Ubuntu | esm-apps/jammy | * |
| Openssh-ssh1 | Ubuntu | esm-apps/noble | * |
| Openssh-ssh1 | Ubuntu | esm-apps/resolute | * |
| Openssh-ssh1 | Ubuntu | jammy | * |
| Openssh-ssh1 | Ubuntu | noble | * |
| Openssh-ssh1 | Ubuntu | resolute | * |
| Openssh-ssh1 | Ubuntu | upstream | * |