CVE-2026-75020 Apache APISIX: ldap-auth plugin cross-subtree identity impersonation
Attackers with valid credentials can impersonate other users via LDAP injection in Apache APISIX, bypassing access controls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-75020?
CVE-2026-75020 is a high-severity vulnerability in Apache APISIX, published on 27 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-90
Which versions are affected by CVE-2026-75020?
1 open source package ship an affected version, including apisix. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
apisix Bitnami | From 2.11.0 | 3.18.0 |
Products include Apache Apisix.
How do I fix CVE-2026-75020?
Upgrade apisix to 3.18.0 or later.
Is CVE-2026-75020 being exploited?
There is no known exploitation of CVE-2026-75020 in the wild and no public exploit code.
Other vulnerabilities in Apache APISIX
- CVE-2022-24112 Apache APISIX Authentication Bypass
- CVE-2022-25757 Apache APISIX: the body_schema check in request-validation plugin can be bypassed
- CVE-2026-31908 Apache APISIX: forward auth plugin allows header injection
- CVE-2026-75005 Apache APISIX: Unauthenticated CPU-exhaustion DoS
- CVE-2025-27446 Privilege escalation in Apache APISIX Java Plugin Runner
Sources
Also known as BIT-apisix-2026-75020, GHSA-fm68-53hc-8wxg, MINI-48f5-v7vh-jqh4.