Skip to main content
VulnerabilityPublished Updated

CVE-2026-110928: Openssh · authorized_keys restrict does not apply to tunnel forwarding

Affects opensshSource GCVE Database

0
Compare

Not known to be exploited.

Data as of 30 Oct 2026, 03:50 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
Ubuntu 26.10opensshpkg:deb/ubuntu/openssh?arch=source&distro=stonkingOther threatsAffected
  • 1:10.2p1-2ubuntu3 – 1:10.5p1-1ubuntu3.1
5 affected builds
Fixed in–
Ubuntu 26.10openssh-gssapipkg:deb/ubuntu/openssh-gssapi?arch=source&distro=stonkingOther threatsAffected
  • 1:10.5p1-1ubuntu1 – 1:10.5p1-1ubuntu3.1
4 affected builds
Fixed in–
Ubuntu 26.10openssh-ssh1pkg:deb/ubuntu/openssh-ssh1?arch=source&distro=stonkingOther threatsAffected
  • =1:7.5p1-18
  • =1:7.5p1-18ubuntu1
  • =1:7.5p1-18ubuntu2
Fixed in–
Ubuntu 26.04 LTSopensshpkg:deb/ubuntu/openssh?arch=source&distro=resoluteOther threatsAffected
  • 1:10.0p1-5ubuntu5 – 1:10.2p1-2ubuntu3.8
9 affected builds
Fixed in–
Ubuntu 26.04 LTSopenssh-ssh1pkg:deb/ubuntu/openssh-ssh1?arch=source&distro=resoluteOther threatsAffected
  • =1:7.5p1-17
  • =1:7.5p1-18
Fixed in–
Ubuntu 24.04 LTSopensshpkg:deb/ubuntu/openssh?arch=source&distro=nobleOther threatsAffected
  • 1:9.3p1-1ubuntu3 – 1:9.6p1-3ubuntu13.20
22 affected builds
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.

References

Community reviews

Loading reviews…