Bug 2543852 (CVE-2026-94052)

Summary: CVE-2026-94052 org.apache.sshd/sshd-ldap: Apache MINA SSHD: LDAP password authentication ineffective
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Priority: urgent    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in the sshd-ldap component of Apache MINA SSHD. Due to a missing verification check in the Lightweight Directory Access Protocol (LDAP) password authenticator (LdapPasswordAuthenticator), user credentials are not properly validated. A remote, unauthenticated attacker can exploit this vulnerability to bypass authentication and gain unauthorized access to the Secure Shell (SSH) server.
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Bug Depends On: 2543944    
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Description OSIDB Bzimport 2026-09-30 09:45:43 UTC 
A missing check in LdapPasswordAuthenticator in component sshd-ldap in Apache MINA SSHD versions 1.2.0 to 2.19.0 or 3.0.0-M1 to 3.0.0-M5 bypassed authentication checks.




Apache MINA SSHD is a Java library for client-side and server-side SSH. The optional sshd-ldap component provides support for integrating password and publickey authentication on the server side with an LDAP server.




sshd-ldap is an optional component. SSH servers implemented with Apache MINA SSHD are affected only if they use sshd-ldap and do configure an LdapPasswordAuthenticator to be used for password authentication. Normal password authentication via the built-in mechanisms in sshd-core is _not_ affected by this vulnerability, which concerns only LdapPasswordAuthenticator.




Users are recommended to upgrade affected applications to version 2.20.0 or 3.0.0-M6, which fix this issue.