Bug 2521829

Summary: CVE-2026-56452 jline: Apache MINA SSHD: Path traversal via SCP allows arbitrary file write [fedora-all]
Product: [Fedora] Fedora Reporter: Vladimir Vasilev <vvasilev>
Component: jlineAssignee: Marián Konček <mkoncek>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: dsupriadi, mizdebsk, mkoncek
Target Milestone: ---Keywords: Security, SecurityTracking
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["cb1b1649-050a-407e-a090-1e6211be7c21"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:    
Bug Blocks: 2503052    

Description Vladimir Vasilev 2026-08-24 12:03:48 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.

Path traversal in the sshd-scp component of Apache MINA SSHD. Apache MINA SSHD is a Java library for client-side and server-side SSH.




The implementation of receiving files or directories via SCP did not validate filenames in SCP "C" or "D" commands. A malicious sender could send filenames containing paths, resulting in files to be written in attacker-controlled places.




The issue affects only

  *  applications that use no longer supported Apache MINA SSHD versions < 2.0.0 and use the SCP functions to receive files,
  *  or applications using sshd-scp in Apache MINA SSHD >= 2.0.0 to receive files.




Applications using Apache MINA SSHD >= 2.0.0 not using sshd-scp are not affected.




The issue is fixed in Apache MINA 2.19.0 and 3.0.0-M5. Affected applications are advised to upgrade to these versions.