CVE-2026-75020 Apache Software Foundation CVE debrief

Who should care

Apache APISIX users, administrators, and security teams should be aware of this vulnerability and take necessary actions to upgrade and protect their systems. They should review the official advisory, assess their exposure, and implement compensating controls if necessary. Security teams should monitor for potential LDAP injection attacks and verify the affected systems.

Technical summary

The CVE-2026-75020 vulnerability is an Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') issue in Apache APISIX. A caller with valid credentials for one LDAP directory entry can authenticate as a consumer mapped to a different entry, bypassing the plugin's configured scope. This issue affects Apache APISIX versions from 2.11.0 through 3.17.0. The vulnerability can be addressed by upgrading to version 3.18.0.

Defensive priority

Apache APISIX users should prioritize upgrading to version 3.18.0 to address the LDAP injection vulnerability.

Recommended defensive actions

• Upgrade Apache APISIX to version 3.18.0 or later
• Review and update affected systems
• Monitor for potential LDAP injection attacks
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE-2026-75020 vulnerability affects Apache APISIX versions from 2.11.0 through 3.17.0. Users are recommended to upgrade to version 3.18.0, which fixes the issue. Evidence is based on official CVE Program and NVD records. Defenders should verify the affected systems, review the official advisory, and monitor for potential LDAP injection attacks. The vulnerability allows a caller with valid credentials for one LDAP directory entry to authenticate as a consumer mapped to a different entry, bypassing the plugin's configured scope.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.