CVE-2026-75020Network attack vectorHinoki check available

Authenticated identity impersonation via LDAP injection

Published Aug 27, 2026 · Updated Aug 27, 2026

LDAP injection in Apache APISIX 2.11.0 through 3.17.0 allows remote authenticated users to impersonate an out-of-scope consumer. The ldap-auth plugin passes the Basic-auth username to lua-resty-ldap without neutralizing LDAP query metacharacters, then derives the Consumer lookup DN from that input and the configured base DN. Valid credentials for one directory entry are required, and successful injection crosses the configured LDAP scope to assume another mapped Consumer's identity.

CVSS severityUnavailable
Unscored
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

LDAP injection in Apache APISIX 2.11.0 through 3.17.0 allows remote authenticated users to impersonate an out-of-scope consumer. The ldap-auth plugin passes the Basic-auth username to lua-resty-ldap without neutralizing LDAP query metacharacters, then derives the Consumer lookup DN from that input and the configured base DN. Valid credentials for one directory entry are required, and successful injection crosses the configured LDAP scope to assume another mapped Consumer's identity.

The record

CVE
CVE-2026-75020
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
The Apache Software Foundation
Product
Apache APISIX
Classifications
CWE-90, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=2.11.0 <=3.17.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache APISIXversion=2.11.0 <=3.17.0

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-90Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

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Your stack

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