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TI-2026-53907 Aliases CVE-2026-77185GHSA-v223-2p4c-wp64

Apache MINA SSHD: Asynchronous authentication can bypass signature verification

Priority MEDIUM 47CWE-305Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Partial Red Hat: 1 fixed, 8 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

Authentication bypass in sshd-core in Apache MINA SSHD versions 2.0.0 to 2.19.0 and 3.0.0-M1 to 3.0.0-M5 for a certain (presumed rare) way to implement an SSH server. Apache MINA SSHD is a Java library for client- and server-side SSH. In the server part of the library, a mechanism to perform "asynchronous authentication" exists. A server implemented with Apache MINA SSHD must contain explicit code to make use of this feature. The implementation of this feature was flawed and could potentially lead to skipping checking the signature in public-key or hostbased authentication, or returning a wrong result. Users are recommended to upgrade to Apache MINA SSHD 2.20.0 or 3.0.0-M6, which fix the logic error and which additionally forbid the use of this "asynchronous authentication" mechanism with the public-key or hostbased authentication schemes: if used, the SSH session will be closed and the server will log an entry indicating that asynchronous authentication may be used only with password or keyboard-interactive authentication.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00403 34th percentileScored 2026-11-07
Fix Partial Apache MINA SSHD (Apache Software Foundation): 2.20.0, 3.0.0-M6Red Hat: 1 advisoryRed Hat: 1 fixed, 8 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

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 SSHD2.0.0 to before 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 2.0.0 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

Red Hat 1 advisory

  • RHSA-2026:71541 Released 2026-09-24 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images maven3.9-3.9.16-0.3.hum1@noarch@public-hummingbird-aarch64-rpms, maven3.9-3.9.16-0.3.hum1@noarch@public-hummingbird-x86_64-rpms, maven3.9-3.9.16-0.3.hum1@src +2

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-2026-63260 Apache MINA SSHD: Memory exhaustion in SFTP client via unsolicited SFTP repliesPriority LOW 39
    Show all 8 records →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet
Red Hat Enterprise Linux 7Affected—
Red Hat Enterprise Linux 8Affected—
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat JBoss Enterprise Application Platform 7AffectedNo fix planned: Will not fix
Red Hat JBoss Enterprise Application Platform 8AffectedNo fix yet
Red Hat Single Sign-On 7AffectedNo fix yet
Red Hat build of Apache Camel for Spring Boot 4AffectedNo fix yet
Red Hat Hardened ImagesFixed RHSA-2026:71541
Not affected: 4 products
  • OpenShift Developer Tools and Services
  • Red Hat Fuse 7
  • Red Hat JBoss Enterprise Application Platform Expansion Pack
  • Red Hat build of Apache Camel 4 for Quarkus 3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-77185
  2. 2026-10-03 Alias added: GHSA-v223-2p4c-wp64
  3. 2026-10-22 Fix available: RHSA-2026:71541 · Red Hat
  4. 2026-10-23 Fix available: Red Hat Hardened Images · Red Hat
  5. 2026-10-23 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