CVE-2026-75020

EUVD-2026-66956

27.08.2026, 10:16

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.

LDAP Injection

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
apache	CNA	7 HIGH	NETWORK	LOW	NONE	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

Base Score

CVSS 3.x

EPSS Score

Percentile: 40.83%

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
apache	apisix	2.11.0 ≤ 𝑥 ≤ 3.17.0	CNA

Common Weakness Enumeration

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

References

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

http://www.openwall.com/lists/oss-security/2026/08/26/14