EUVD-2026-46103
GHSA-j262-jh5j-p4fw
Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Primary rating from Vendor (apache) · only source for this CVE.
CVSS VectorVendor: apache
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Lifecycle Timeline
4DescriptionCVE.org
Improper certificate validation in Apache MINA SSHD (server-side). Apache MINA SSHD is a Java library for client-side and server-side SSH.
Server-side OpenSSH user certificate validation during user authentication in an Apache MINA SSHD server did not check for the unsupported force-command or verify-required options that could be embedded in the certificate, nor did it validate these options. As a result it was possible that a user could authenticate with such a certificate that included a force-command option but still was able to execute other commands. What other command exactly would be available to the user depends on the implementation of the server.
This issue is fixed in Apache MINA SSHD 2.19.0 and 3.0.0-M5. Applications are advised to upgrade to these versions.
The fix rejects OpenSSH user certificates that include these options, since Apache MINA SSHD implements neither force-command nor sk-*-cert-v01@openssh.com user certificates (which are the only ones for which verify-required would make sense).
Articles & Coverage 4
AnalysisAI
Command-restriction bypass in Apache MINA SSHD (server-side) lets a user who authenticates with an OpenSSH user certificate carrying a force-command directive execute arbitrary commands instead of the single restricted command the certificate authority intended. The server accepts and honors such certificates but silently ignores the force-command and verify-required options, breaking the security model that certificate issuers rely on to constrain principals. …
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Within 24 hours, identify all systems running Apache MINA SSHD and inventory those using OpenSSH certificate-based authentication with force-command restrictions. …
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Same weakness CWE-295 – Improper Certificate Validation
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External POC / Exploit Code
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