CVE-2026-94002
Published:September 30, 2026
Updated:October 15, 2026
Possible memory exhaustion in SFTP clients (DefaultSftpClient) in component sshd-sftp in Apache MINA SSHD versions 0.9.0 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. The sshd-sftp component provides support for SFTP.
The SFTP client implementation, when receiving a reply, did not check that this reply corresponded to a request sent earlier. Unsolicited replies would be stored but never consumed. A malicious server could keep sending unsolicited replies until available memory in the client was exhausted.
Users are recommended to upgrade to version 2.20.0 or 3.0.0-M6, which fix this issue.
Affected Packages
https://github.com/apache/mina-sshd.git (GITHUB):
Affected version(s) >=sshd-3.0.0-M1 <sshd-3.0.0-M6Fix Suggestion:
Update to version sshd-3.0.0-M6https://github.com/apache/mina-sshd.git (GITHUB):
Affected version(s) >=sshd-2.0.0 <sshd-2.20.0Fix Suggestion:
Update to version sshd-2.20.0org.apache.sshd:sshd-sftp (JAVA):
Affected version(s) >=3.0.0-M1 <3.0.0-M6Fix Suggestion:
Update to version 3.0.0-M6org.apache.sshd:sshd-sftp (JAVA):
Affected version(s) >=2.0.0 <2.20.0Fix Suggestion:
Update to version 2.20.0Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Allocation of Resources Without Limits or Throttling
EPSS
Base Score:
0.43