Apache MINA SSHD: Memory exhaustion in SFTP client via unsolicited SFTP replies (CVE-2026-94002) | HOL Guard CVE

High · CVSS 7.5CVE-2026-94002

Apache MINA SSHD: Memory exhaustion in SFTP client via unsolicited SFTP replies

Answer in brief

CVE-2026-94002 records a High severity (CVSS 7.5) vulnerability in Apache MINA SSHD: Memory exhaustion in SFTP client via unsolicited SFTP replies. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/org.apache.sshd:sshd-sftp (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 30, 2026Updated Sep 30, 2026Source checked Sep 30, 2026First seen by HOL Sep 30, 2026Material review Sep 30, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Apache Software Foundation/org.apache.sshd:sshd-sftp (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Apache Software Foundation/org.apache.sshd:sshd-sftpgeneric	>=0.9.0 <2.20.0 \|\| >=3.0.0-M1 <3.0.0-M6	2.20.0, 3.0.0-M6

Recommended response

Check inventory. Check lockfiles and deployed manifests for Apache Software Foundation/org.apache.sshd:sshd-sftp.
Review the reported fix. Update Apache Software Foundation/org.apache.sshd:sshd-sftp to 2.20.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 30, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.