Apache MINA SSHD: Memory exhaustion DoS via unbounded SCP command line read (CVE-2026-93996) | HOL Guard CVE

Medium · CVSS 6.5CVE-2026-93996

Apache MINA SSHD: Memory exhaustion DoS via unbounded SCP command line read

Answer in brief

CVE-2026-93996 records a Medium severity (CVSS 6.5) vulnerability in Apache MINA SSHD: Memory exhaustion DoS via unbounded SCP command line read. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/org.apache.sshd:sshd-scp (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: Medium · CVSS 6.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 6.5. 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-scp (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-scpgeneric	>=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-scp.
Review the reported fix. Update Apache Software Foundation/org.apache.sshd:sshd-scp 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

Uncontrolled resource consumption in component ssd-scp in Apache MINA SSHD versions up to 2.19.0 or 3.0.0-M1 to 3.0.0-M5. Apache MINA SSHD is a Java library for client-side and server-side SSH. Component sshd-scp of Apache MINA SSHD provides a Java implementation of SCP. The SCP command protocol is line-oriented with LF-terminated lines. The protocol handler in sshd-scp did not impose any limit on the length of such protocol lines. A malicious peer just sending a junk command containing a never-ending sequence of characters but never a LF would cause the receiver to allocate memory to store this whole junk command, exhausting memory and crashing the application with an OutOfMemoryError. Users are recommended to upgrade to version 2.20.0 or 3.0.0-M6, which fix this issue by enforcing an upper limit on the length of SCP protocol lines.

Quoted source text, attributed separately from HOL analysis.