CVE-2026-59999
In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not.
CSIRTS triage
- What
- The configuration option DisableForwarding was not properly enforced over PermitTunnel in OpenSSH.
- Who is affected
- Deployments of OpenSSH before version 10.4 using sshd.
- Urgency
- Remediation is medium urgency due to potential tunneling risks, with no current exploitation reported.
- Action
- Upgrade to OpenSSH version 10.4 or later.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.
Advisory coverage (2)
External references
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