CVE-2026-94053: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-qrc3-w53g-j8gv
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CVSS 9.1
CWE-90
Published
Advisory Summary

CVE-2026-94053 is a CRITICAL (CVSS 9.1) security vulnerability vulnerability (CWE-90: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product constructs all or part of an ldap query using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended ldap query when it is sent to a downstream component.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-94053 at a Glance

CVE Identifier CVE-2026-94053
GHSA Identifier GHSA-qrc3-w53g-j8gv
Severity CRITICAL
CVSS v3.1 Base Score 9.1
CWE Classification CWE-90: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2026-94053

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-94053, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-90: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection'), where the product constructs all or part of an ldap query using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended ldap query when it is sent to a downstream component. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

References

NVD — CVE-2026-94053 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-94053
lists.apache.org/thread.html/cyrxkdz... WEB
https://lists.apache.org/thread.html/cyrxkdzl3c70rrqs3klqphqz1hwm7p41
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/09/29/39

Frequently Asked Questions

What is CVE-2026-94053?
CVE-2026-94053 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-90: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection').
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-94053?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-94053?
CVE-2026-94053 has a CVSS v3.1 base score of 9.1 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2026-94053?
CVE-2026-94053 is classified under CWE-90: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') (The product constructs all or part of an LDAP query using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended LDAP query when it is sent to a downstream component.).
How can I check Maven dependencies for CVE-2026-94053?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-qrc3-w53g-j8gv",
  "modified" : "2026-09-30T12:35:17Z",
  "published" : "2026-09-30T12:35:17Z",
  "aliases" : [ "CVE-2026-94053" ],
  "details" : "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.\n\n\n\n\nApache MINA SSHD is a Java library for client-side and server-side SSH. \nThe optional sshd-ldap component provides support for integrating \npassword and publickey authentication on the server side with an LDAP \nserver.\n\n\n\n\nsshd-ldap is an optional component. SSH servers implemented with Apache \nMINA SSHD are affected only if they use sshd-ldap and do configure it to be used for password of public key authentication.\n\nOther Apache MINA SSHD servers are not affected.\n\n\n\n\nLack of escaping LDAP filter metacharacters enabled successful authentication with username \"*\" and password \"*\".\n\n\n\n\nUsers 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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-94053"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread.html/cyrxkdzl3c70rrqs3klqphqz1hwm7p41"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/09/29/39"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-90" ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-30T10:17:18Z"
  }
}