Bug 2544423

Summary: CVE-2026-93995 apache-sshd: Apache MINA SSHD: Arbitrary file write via improper Git archive argument validation [fedora-all]
Product: [Fedora] Fedora Reporter: Ganesh <gnaik>
Component: apache-sshdAssignee: Mat Booth <mat.booth>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: java-sig-commits, mat.booth, msrb
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["7a13c4f3-962d-4f51-a0a7-51a47c1b1ed7"]}
Fixed In Version: Doc Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 2543858    

Description Ganesh 2026-10-01 03:58:13 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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.