CVE-2026-94276: CWE-287 Improper Authentication in Apache Software Foundation Apache APISIX
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.
AI Analysis
Technical Summary
This vulnerability in Apache APISIX arises from improper authentication handling in the openid-connect plugin when remote introspection is used against an authorization server serving multiple issuers. Specifically, a token that introspects as active for one issuer may be accepted on a route restricted to a different issuer, potentially allowing unauthorized access. The affected versions are from 3.12.0 through 3.18.0. The vendor has addressed this issue in version 3.19.0.
Potential Impact
An attacker could exploit this flaw to gain unauthorized access to routes restricted to different issuers by using a token valid for another issuer. This could lead to unauthorized resource access within the affected Apache APISIX deployments.
Mitigation Recommendations
Users should upgrade Apache APISIX to version 3.19.0 or later, where this improper authentication vulnerability has been fixed.
CVE-2026-94276: CWE-287 Improper Authentication in Apache Software Foundation Apache APISIX
Description
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.
CVSS v4.0
Score 5.1medium
Affected software
Apache Software Foundation
Apache APISIX
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Apache APISIX arises from improper authentication handling in the openid-connect plugin when remote introspection is used against an authorization server serving multiple issuers. Specifically, a token that introspects as active for one issuer may be accepted on a route restricted to a different issuer, potentially allowing unauthorized access. The affected versions are from 3.12.0 through 3.18.0. The vendor has addressed this issue in version 3.19.0.
Potential Impact
An attacker could exploit this flaw to gain unauthorized access to routes restricted to different issuers by using a token valid for another issuer. This could lead to unauthorized resource access within the affected Apache APISIX deployments.
Mitigation Recommendations
Users should upgrade Apache APISIX to version 3.19.0 or later, where this improper authentication vulnerability has been fixed.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-09-21T09:22:14.849Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6abe748da43b0b3b89bd1c9d
Added to database: 10/01/2026, 14:56:13 UTC
Last enriched: 10/01/2026, 15:08:17 UTC
Last updated: 10/01/2026, 19:41:32 UTC
Views: 5
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