CVE Feed

    Dashboard / CVE / CVE-2026-93994

    CVE-2026-93994

    Apache MINA SSHD is a Java library for client-side and server-side SSH. SSH servers can be configured to require multi-authentication schemes, for instance two different public keys, not just one. In OpenSSH, this would be done by setting in sshd_config AuthenticationMethods "publickey,publickey". Apache MINA SSHD provides an equivalent configuration mechanism. In Apache MINA SSHD versions up to 2.19.0 and 3.0.0-M1 to 3.0.0-M5 the server code in component sshd-core does not enforce that the two public keys presented are different. A user can thus successfully authenticate with only one of the two key pairs required by presenting this single key twice. This is a partial authentication bypass. Users are recommended to upgrade to version 2.20.0 or 3.0.0-M6, which fix this issue.

    Published:Sep 30, 2026
    Last Modified:Sep 30, 2026
    EPS:Sep 30, 2026
    EPSS Score:0.00457
    CVSS Score:8.1

    Affected Products

    Vendor
    Apache
    Product
    Mina Sshd

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-90 Reflection Attack in Authentication Protocol

    Related CVEs

    CVE-2026-77185 (CVSS 9.1) — 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…
    CVE-2026-94053 (CVSS 9.1) — Authentication bypass via LDAP injection in component sshd-ldap in Apache MINA SSHD versions 1.2.0 to 2.19.0 a…
    CVE-2026-93995 (CVSS 6.5) — Improper input validation in sshd-git in Apache MINA SSHD, versions up to 2.19.0 and 3.0.0-M1 to 3.0.0-M5. Apa…
    CVE-2026-93996 (CVSS 6.5) — Uncontrolled resource consumption in component ssd-scp in Apache MINA SSHD versions up to 2.19.0 or 3.0.0-M1 t…
    CVE-2026-94002 (CVSS 7.5) — Possible memory exhaustion in SFTP clients (DefaultSftpClient) in component sshd-sftp in Apache MINA SSHD vers…
    CVE-2026-94029 (CVSS 6.5) — 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-sft…
    CVE-2026-94052 (CVSS 9.1) — A missing check in LdapPasswordAuthenticator in component sshd-ldap in Apache MINA SSHD versions 1.2.0 to 2.19…
    CVE-2026-56623 (CVSS 7.1) — Path traversal on Windows in Apache MINA SSHD component sshd-git. Apache MINA SSHD is a Java library for clien…
    CVE-2026-56624 (CVSS 7.3) — Improper certificate validation in Apache MINA SSHD (server-side). Apache MINA SSHD is a Java library for clie…
    CVE-2026-58624 (CVSS 5.4) — Improper input validation in sshd-git in Apache MINA SSHD. Apache MINA SSHD is a Java library for client-side …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High