CVE-2026-56452Network attack vector

Arbitrary file write via unchecked SCP filenames

Published Jul 20, 2026 · Updated Jul 20, 2026

Path traversal in Apache MINA SSHD 2.18.0 and earlier and 3.0.0-M1 through 3.0.0-M4 allows remote attackers to write arbitrary files. The sshd-scp receiver accepts path-bearing filenames from SCP C and D commands without ensuring that the resolved destination stays within the requested directory. Exposure requires an application to receive files through the affected SCP implementation, and exploitation writes files to attacker-selected locations.

CVSS severity7.5
High
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Path traversal in Apache MINA SSHD 2.18.0 and earlier and 3.0.0-M1 through 3.0.0-M4 allows remote attackers to write arbitrary files. The sshd-scp receiver accepts path-bearing filenames from SCP C and D commands without ensuring that the resolved destination stays within the requested directory. Exposure requires an application to receive files through the affected SCP implementation, and exploitation writes files to attacker-selected locations.

The record

CVE
CVE-2026-56452
Published
Jul 20, 2026
Updated
Jul 20, 2026
Vendor
The Apache Software Foundation
Product
Apache MINA SSHD
Classifications
CWE-22, CWE-73, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.18.0
  2. Affected versionversion=3.0.0-M1 <=3.0.0-M4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache MINA SSHDversion=0 <=2.18.0; version=3.0.0-M1 <=3.0.0-M4

Published CVSS scores

7.5Apache Software FoundationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-73External Control of File Name or Path
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo