Is CVE-2026-93996 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-93996 being exploited in the wild.

How severe is CVE-2026-93996?

Medium severity, with a CVSS score of 6.5, published 30 September 2026.

Which products and versions are affected?

Apache MINA SSHD up to 2.19.0, 3.0.0-M1 to 3.0.0-M5.

Is there a fix for CVE-2026-93996?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-93996 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-93996?

Check whether you run Apache MINA SSHD at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-93996: Apache MINA SSHD denial of service via SCP protocol line length

CVE-2026-93996 · Severity: medium · CVSS 6.5 · Published 2026-09-30

Apache MINA SSHD is a Java library providing SSH client and server functionality. The SCP component fails to limit the length of protocol command lines, allowing a malicious peer to send unbounded junk data that exhausts memory and crashes the application. This could cause service outages in systems using this library for SSH file transfer.

Technologies: Apache MINA SSHD. Vendors: Apache.

Quick answers

Is CVE-2026-93996 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-93996 being exploited in the wild.
How severe is CVE-2026-93996?: Medium severity, with a CVSS score of 6.5, published 30 September 2026.
Which products and versions are affected?: Apache MINA SSHD up to 2.19.0, 3.0.0-M1 to 3.0.0-M5.
Is there a fix for CVE-2026-93996?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-93996 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-93996?: Check whether you run Apache MINA SSHD at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The sshd-scp component does not enforce a maximum line length on SCP protocol messages, which are normally LF-terminated. An attacker can send a continuous stream of characters without a line terminator, causing the handler to allocate unbounded memory until an OutOfMemoryError occurs. The fix adds an upper limit on SCP protocol line length.

Affected products

Apache MINA SSHD up to 2.19.0, 3.0.0-M1 to 3.0.0-M5

Timeline

2026-09-30: disclosed

References

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