AI analysis
Apache MINA SSHD's sshd-git component (GitPgmCommandFactory) lets authenticated SSH clients run a limited set of git commands through JGit on repositories stored on the server. A prior fix for CVE-2026-58624 blocked git archive --output and -o so the archive would be sent back over SSH instead of written on the server, but it missed the single-argument form -o=file.zip. An authenticated client can therefore still make JGit's archive command write a file on the server, a high integrity impact with no confidentiality or availability impact (CVSS 3.1 6.5). Only MINA SSHD servers configured with GitPgmCommandFactory on versions through 2.19.0, or 3.0.0-M1 through 3.0.0-M5, are affected. No public proof of concept is known and the issue is not in CISA KEV.
What to do: Upgrade Apache MINA SSHD sshd-git to 2.20.0 or 3.0.0-M6. If you cannot upgrade immediately, disable GitPgmCommandFactory or stop exposing git archive over SSH, and check the server filesystem for unexpected archives written by authenticated SSH users.
Affected
| Apache MINA SSHD (sshd-git / org.apache.sshd:sshd-git) | through 2.19.0, and 3.0.0-M1 through 3.0.0-M5 |
Estimated exposure
—No basis for an estimate.
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Description
Improper input validation in sshd-git in Apache MINA SSHD, versions up to 2.19.0 and 3.0.0-M1 to 3.0.0-M5. Apache MINA SSHD is a Java library for client-side and server-side SSH. Component org.apache.sshd:sshd-git provides though class GitPgmCommandFactory a way to configure an Apache MINA SSHD server such that authenticated SSH clients can remotely execute git commands via the JGit library on git repositories stored on the server. In CVE-2026-58624 this mechanism was restricted to only a few git commands, including "git archive" without "--output" or "-o" options such that the resulting archive would not be written on the server but instead sent back to the client over the SSH connection. The fix done for CVE-2026-58624 was insufficient as it missed removing the single-argument "-o=file.zip" version of the command parameter from the "archive" command. Users are recommended to upgrade to version 2.20.0 or 3.0.0-M6, which fix this issue.