Description
OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.
Affected products
openbsd: openssh
References3
- marc.info/?l=openssh-unix-dev&m=177513443901484&w=2 Mailing ListThird Party Advisory
- www.openssh.org/releasenotes.html#10.3p1 Release Notes
- www.openwall.com/lists/oss-security/2026/04/02/3 Third Party Advisory
Metrics
- CVSS 3.1
-
8.1
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 12 · as of 12 November 2026
- CWE
- CWE-670
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