Bug 2543932

Summary:	CVE-2026-94053 apache-sshd: Apache MINA SSHD: LDAP injection in sshd-ldap [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Cedric Buissart <cbuissar>
Component:	apache-sshd	Assignee:	Mat Booth <mat.booth>
Status:	NEW ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	urgent	Docs Contact:
Priority:	urgent
Version:	rawhide	CC:	java-sig-commits, mat.booth, msrb
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["34847928-320f-4b72-84f1-a25970e7b616"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2543863

Description Cedric Buissart 2026-09-30 13:59:56 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Authentication bypass via LDAP injection in component sshd-ldap in Apache MINA SSHD versions 1.2.0 to 2.19.0 and 3.0.0-M1 to 3.0.0-M5.




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 it to be used for password of public key authentication.

Other Apache MINA SSHD servers are not affected.




Lack of escaping LDAP filter metacharacters enabled successful authentication with username "*" and password "*".




Users are recommended to upgrade affected applications to version 2.20.0 or 3.0.0-M6, which fix this issue by properly escaping filter parameters according to RFC 4515.