CVE-2026-110928: Openssh · authorized_keys restrict does not apply to tunnel forwarding
Affects opensshSource GCVE Database
Not known to be exploited.
Data as of 30 Oct 2026, 03:50 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 28 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10opensshpkg:deb/ubuntu/openssh?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10openssh-gssapipkg:deb/ubuntu/openssh-gssapi?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10openssh-ssh1pkg:deb/ubuntu/openssh-ssh1?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSopensshpkg:deb/ubuntu/openssh?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSopenssh-ssh1pkg:deb/ubuntu/openssh-ssh1?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSopensshpkg:deb/ubuntu/openssh?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Users should consult vendor advisories for updates or workarounds. Until a fix is available, administrators should consider restricting SSH access and tunnel forwarding through other means such as firewall rules or disabling tunnel forwarding globally if not needed.
Description
A vulnerability in OpenSSH where the restrictions set by authorized_keys do not apply to tunnel forwarding. This means that tunnel forwarding can bypass the intended restrictions configured in authorized_keys, potentially allowing unauthorized tunnel forwarding.