CVE-2026-56452

Description

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.

Severity (CVSS)

Weaknesses

• CWE-22 — CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
• CWE-73 — CWE-73 External Control of File Name or Path

Affected products

References

• https://lists.apache.org/thread/xgoqvmksmd94fsqnzqjdtfjxf35os9no (vendor-advisory)
• http://www.openwall.com/lists/oss-security/2026/07/20/15