High severity · published Aug 27, 2026
CVE-2026-75020
Apache APISIX: ldap-auth plugin cross-subtree identity impersonation
8.1
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
Apache APISIX · Apache Software Foundation
2.11.0 through 3.17.0 · source: vendor
AP
Apisix · Apache
2.11.0 before 3.18.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-75020
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-75020
Mailing List
https://lists.apache.org/thread/d4007wk6dbl9mxy5h05zxwn8fsg13bxt
Mailing List
http://www.openwall.com/lists/oss-security/2026/08/26/14
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