CVE-2026-56452: Apache MINA SSHD: Path traversal in SCP file reception

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-20 · updated 2026-10-24
Weakness: CWE-22

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.

Affected products

Apache Software Foundation Apache MINA SSHD: from 2.0.0 before 2.19.0; 3.0.0-m1, 3.0.0-m2, 3.0.0-m3, 3.0.0-m4 — fixed in 2.19.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache MINA SSHD 2.19.0. Check the vendor advisory for mitigations.

References

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