CVE-2026-35414 Details
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.
A vulnerability exists in OpenSSH versions prior to 10.3, related to the handling of the authorized_keys principals option. In certain rare scenarios, a certificate authority could issue a certificate with an empty principals section, which would be incorrectly interpreted as a wildcard match for any principal. This could allow unauthorized authentication as any user who trusts the CA, creating a potential security risk.
Users should upgrade to OpenSSH 10.3 or later, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://marc.info/?l=openssh-unix-dev&m=177513443901484&w=2 | [email protected] | Mailing ListThird Party Advisory |
| https://www.openssh.org/releasenotes.html#10.3p1 | [email protected] | Release Notes |
| https://www.openwall.com/lists/oss-security/2026/04/02/3 | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-670 | Always-Incorrect Control Flow Implementation | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| openbsd openssh | < 10.3 |
CPE
Remediation
| |
Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 10, 2026 | Reanalysis | [email protected] |
| Apr 9, 2026 | Reanalysis | [email protected] |
| Apr 3, 2026 | Initial Analysis | [email protected] |
| Apr 2, 2026 | New CVE Received | [email protected] |