CVE-2026-75020 PUBLISHED

Apache APISIX: ldap-auth plugin cross-subtree identity impersonation

Assigner: apache
Reserved: 17.08.2026 Published: 27.08.2026 Updated: 27.08.2026

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.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
CVSS Score: 7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	High
Attack Complexity	Low	Integrity	None	Integrity	High
Attack Requirements	Present	Availability	None	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Apache Software Foundation
Product	Apache APISIX
Versions	Default: unaffected affected from 2.11.0 to 3.17.0 (incl.)

Credits

MopMonk AI reporter

References

https://lists.apache.org/thread/d4007wk6dbl9mxy5h05zxwn8fsg13bxt

Problem Types

CWE-90 Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') CWE