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TI-2026-63255 Aliases CVE-2026-93996GHSA-6wm4-w8x6-4vvr

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

Priority LOW 29CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-770.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00321 25th percentileScored 2026-11-07
Fix Partial Apache MINA SSHD (Apache Software Foundation): 2.20.0, 3.0.0-M6Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache MINA SSHDbefore 2.20.0; 3.0.0-M1 to before 3.0.0-M62.20.0, 3.0.0-M6Patch availableCNA
  • Apache MINA SSHD VendorApache Affected before 2.20.0; 3.0.0-M1 to before 3.0.0-M6 Fixed in 2.20.0, 3.0.0-M6 Patch available CNA

Remediation

  • Fix · CNA Apache MINA SSHD (Apache Software Foundation) Fixed in 2.20.0, 3.0.0-M6

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apache MINA SSHD 2.20.0, 3.0.0-M6

    8 records Highest priority Priority MEDIUM 3 MEDIUM, 5 LOW

    Other records, highest priority first

    • TI-2026-63290 Apache MINA SSHD: LDAP injection in sshd-ldapPriority MEDIUM 47
    • TI-2026-63289 Apache MINA SSHD: LDAP password authentication ineffectivePriority MEDIUM 47
    • TI-2026-53907 Apache MINA SSHD: Asynchronous authentication can bypass signature verificationPriority MEDIUM 47
    Show all 8 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Fuse 7AffectedNo fix planned: Out of support scope

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-93996
  2. 2026-10-03 Alias added: GHSA-6wm4-w8x6-4vvr
  3. 2026-11-06 Affected versions changed · Red Hat
  4. 2026-11-06 CVSS score added · Red Hat

References

Advisory 1

  • TI-2025-18529 Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT KEVCVSS 3.1CRITICAL 10.0
  • TI-2024-30292 Apache OFBiz: Confused controller-view authorization logic (forced browsing) KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-26062 Apache OFBiz: Unauthenticated endpoint could allow execution of screen rendering code KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-21190 Apache OFBiz: Path traversal leading to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-18186 Apache HugeGraph-Server: Command execution in gremlin KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-25106 Deserialization of untrusted data in Apache ActiveMQ KEVCVSS 3.1CRITICAL 10.0
See all 4053 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences