---
id: CVE-2026-94276
title: >-
  Improper Authentication vulnerability in Apache APISIX.


  On a route using openid-connect plugin with remote introspection against an
  authorization server that serves multiple issuers, a token that introspects as
  active for one issuer may…
summary: >-
  Improper Authentication vulnerability in Apache APISIX.


  On a route using openid-connect plugin with remote introspection against an
  authorization server that serves multiple issuers, a token that introspects as
  active for one issuer may…
severity: medium
cvss: 5.1
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N'
cwe:
  - CWE-287
vendor: Apache Software Foundation
product: Apache APISIX
affected:
  - apache_apisix >= 3.12.0 <= 3.18.0
published: '2026-10-01'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T12:54:27.463'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-94276'
references:
  - url: 'https://lists.apache.org/thread.html/txn3br25kl657fh15rwcy1oht1xbpyyk'
    label: security@apache.org
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-10-01T11:42:53.819Z'
---

## Overview

Improper Authentication vulnerability in Apache APISIX.

On a route using openid-connect plugin with remote introspection against an authorization server that serves multiple issuers, a token that introspects as active for one issuer may get accepted on a route restricted to another. This issue affects Apache APISIX: from 3.12.0 through 3.18.0.

Users are recommended to upgrade to version 3.19.0, which fixes the issue.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.