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Apache MINA SSHD CVE-2026-93996

| EUVDEUVD-2026-89754 MEDIUM
Allocation of Resources Without Limits or Throttling (CWE-770)
2026-09-29 GHSA-6wm4-w8x6-4vvr
Denial Of Service Apache Java Suse
6.5
CVSS 3.1 · Vendor
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Severity by source

Vendor (CNA) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
vuln.today AI
6.5 MEDIUM

Network-reachable SCP handler abused by an authenticated peer (PR:L) with low complexity; unbounded buffering crashes the JVM, so availability-only A:H, no C/I impact.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SUSE
MEDIUM
qualitative

Primary rating from Vendor (CNA).

CVSS VectorVendor

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

4
Patch available
Sep 30, 2026 - 11:01 EUVD
CVSS changed
Sep 30, 2026 - 10:22 NVD
6.5 (MEDIUM)
Analysis Generated
Sep 29, 2026 - 20:16 vuln.today
CVE Published
Sep 29, 2026 - 18:23 oss-security
CRITICAL

Description PRE-NVD

Disclosed via oss-security. NVD scoring and full description are pending.

Articles & Coverage 2

News 14 New Java Vulnerabilities - 4 Critical, 10 High Severity Sep 30, 2026 News Critical DoS Memory Exhaustion in Apache MINA SSHD SCP - CVE-2026-93996 Sep 30, 2026

AnalysisAI

Memory exhaustion denial of service in Apache MINA SSHD's SCP subsystem (module sshd-scp) affects all releases before 2.20.0 and the 3.0.0-M1 through 3.0.0-M5 milestones, requiring a connected SSH peer that has reached the SCP protocol handler - on a server deployment this typically means successful low-privilege authentication, which is the main gating factor (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H, 6.5 Medium). The peer only needs to stream a single malformed SCP command line that never terminates with an LF, causing the handler to buffer the endless input until the JVM throws OutOfMemoryError and the application crashes; there is no confidentiality or integrity impact. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires an active SCP session with the sshd-scp component in use (the Java SCP implementation shipped by Apache MINA SSHD versions up to 2.19.0 or 3.0.0-M1 through 3.0.0-M5). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This is a genuine but bounded denial-of-service issue. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade to the fixed releases: Apache MINA SSHD 2.20.0 for the 2.x line or 3.0.0-M6 for the 3.0.0 milestone line - these are the exact versions the project states enforce an upper bound on SCP protocol line length and close the issue (advisory: https://seclists.org/oss-sec/2026/q3/1008; project: https://mina.apache.org/). … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, inventory every application and appliance that embeds Apache MINA SSHD and determine whether it is running an affected release (any version before 2.20.0, plus the 3.0.0-M1 through 3.0.0-M5 milestones); where SCP functionality is not a business requirement, disable the sshd-scp subsystem entirely or restrict it to a small allow-list of trusted accounts, and where it must remain enabled, apply JVM heap caps and OS-level memory limits (ulimit/cgroup) so a runaway buffer triggers a controlled restart rather than a node-wide outage, and ensure authentication is enforced with least-privilege accounts and rate-limited login attempts. …

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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS Affected

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CVE-2026-93996 vulnerability details – vuln.today
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