Vulnerability in OpenBSD OpenSSH
CVE-2026-59999
In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.002 (4.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- OpenBSD OpenSSH — versions 0
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2026/07/06/5 (Mailing List, Release Notes)
- marc.info/ (Release Notes)
- www.openssh.org/releasenotes.html (Release Notes)
Frequently asked questions
- What is CVE-2026-59999?
- CVE-2026-59999 is a medium-severity vulnerability in OpenBSD OpenSSH, classified under CWE-348. CVSS score: 5.9/10. Published 2026-07-08.
- How severe is CVE-2026-59999?
- Medium severity. CVSS v3 base score is 5.9 out of 10.