CVE-2026-75020
Received Received - Intake

LDAP Injection in Apache APISIX

Publication date: 2026-08-27

Last updated on: 2026-08-27

Assigner: Apache Software Foundation

Description
Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') vulnerability in Apache APISIX. A caller who holds valid credentials for one entry in the LDAP directory can authenticate through APISIX as a consumer mapped to a different entry, one the plugin's configured scope was meant to keep out of reach. This issue affects Apache APISIX: from 2.11.0 through 3.17.0. Users are recommended to upgrade to version 3.18.0, which fixes the issue.

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Meta Information

Published
2026-08-27
Last Modified
2026-08-27
Generated
2026-08-27
AI Q&A
2026-08-27
EPSS Evaluated
N/A
NVD
CVE-2026-75020
EUVD
EUVD-2026-66956

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
apache apisix From 2.11.0 (inc) to 3.17.0 (inc)
apache apisix 3.18.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-90 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.

Attack-Flow Graph

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Executive Summary

This is an LDAP injection vulnerability in Apache APISIX. It allows a user with valid credentials for one LDAP entry to authenticate as a different consumer that should be restricted by the plugin's scope. This happens due to improper neutralization of special elements in LDAP queries.

Detection Guidance

Detecting LDAP injection vulnerabilities like CVE-2026-75020 requires monitoring LDAP queries for unusual patterns or unauthorized access attempts. Check APISIX logs for suspicious authentication requests or queries that bypass normal access controls. Review network traffic for LDAP protocol anomalies, such as malformed queries or unexpected consumer mappings.

Impact Analysis

An attacker could gain unauthorized access to resources or data by bypassing intended access controls. This could lead to privilege escalation, data breaches, or unauthorized actions within the system.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating compliance requirements for data protection and privacy such as GDPR and HIPAA. It may result in legal penalties, reputational damage, and loss of trust.

Mitigation Strategies

Upgrade Apache APISIX to version 3.18.0 or later to fix the LDAP injection vulnerability.

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