CVE-2026-94029 (GCVE-0-2026-94029)

Vulnerability from cvelistv5 – Published: 2026-09-30 09:35 – Updated: 2026-09-30 19:42
VLAI
Title
Apache MINA SSHD: Memory exhaustion in SFTP v6 check-file-name/check-file-handle extension
Summary
Server-side memory exhaustion in Apache MINA SSHD 1.0.0 to 2.19.0 and 3.0.0-M1 to 3.0.0-M5, component sshd-sftp, in the SFTP v6 check-file-name/check-file-handle extension. Apache MINA SSHD is a Java library for client-side and server-side SSH. Using a very small "block size" (for instance 256, which is the minimum) on a huge file generates many (file size / block size) hashes. The resulting SFTP reply message was accumulated fully in memory server-side, which could, with a suitably large (possibly sparse) file exhaust the server-side memory, taking down the server. Users are recommended to upgrade to version 2.20.0 or 3.0.0-M6, which fix this issue by imposing a maximum limit on the size of the reply. Many SFTP implementations have a general limit on the size of SFTP messages anyway; typically 256kB as in OpenSSH or also in Apache MINA SSHD.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 19:42 UTC
CWE
  • CWE-770 - Allocation of resources without limits or throttling
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 1078 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache MINA SSHD Affected: 1.0.0 , < 2.20.0 (maven)
Affected: 3.0.0-M1 , < 3.0.0-M6 (maven)
guessed Create a notification for this product.
Credits
Ho1aAs <xxy010605@gmail.com>
Show details on NVD website
To clipboard 

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