TI-2026-63266 Aliases CVE-2026-94029 GHSA-fj5v-qh2p-6v8f

Apache MINA SSHD: Memory exhaustion in SFTP v6 check-file-name/check-file-handle extension

LOW 29CWE-770Published 2026-09-30 · Updated 2026-09-30

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: 4 without a fix

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

Summary

Server-side memory exhaustion in Apache MINA SSHD 1.0.0 to 2.19.0 and 3.0.0-M1 to 3.0.0-M5, component sshd-sftp, in the SFTP v6 check-file-name/check-file-handle extension. Apache MINA SSHD is a Java library for client-side and server-side SSH. Using a very small "block size" (for instance 256, which is the minimum) on a huge file generates many (file size / block size) hashes. The resulting SFTP reply message was accumulated fully in memory server-side, which could, with a suitably large (possibly sparse) file exhaust the server-side memory, taking down the server. Users are recommended to upgrade to version 2.20.0 or 3.0.0-M6, which fix this issue by imposing a maximum limit on the size of the reply. Many SFTP implementations have a general limit on the size of SFTP messages anyway; typically 256kB as in OpenSSH or also in Apache MINA SSHD.

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: 4 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

Vendor	Product	Affected versions	Fixed in	Status	Source
Apache	Apache MINA SSHD	1.0.0 to before 2.20.0; 3.0.0-M1 to before 3.0.0-M6	2.20.0, 3.0.0-M6	Patch available	CNA

Apache MINA SSHD VendorApache Affected 1.0.0 to 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 · 2026-09-30
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 →

Product	Status	Plan or fix
Red Hat Fuse 7	Affected	No fix planned: Out of support scope
Red Hat build of Apache Camel 4 for Quarkus 3	Affected	No fix yet: Fix deferred
Red Hat build of Apache Camel for Spring Boot 4	Affected	No fix yet: Fix deferred
Red Hat build of Apicurio Registry 3	Affected	No fix planned: Out of support scope

Timeline

2026-10-02 Threatist record created from CVE-2026-94029
2026-10-03 Alias added: GHSA-fj5v-qh2p-6v8f

References

Advisory 1

https://lists.apache.org/thread.html/ytbl4rwby62xl7llm3wp7k975wwdx99t

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

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