CVE-2026-94276 PUBLISHED

Apache APISIX: Openid-connect introspection validation issue

Assigner: apache
Reserved: 21.09.2026 Published: 01.10.2026 Updated: 01.10.2026

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.

Metrics

CVSS 4.0

CVSS Vector: 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
CVSS Score: 5.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	High
Attack Complexity	Low	Integrity	None	Integrity	Low
Attack Requirements	Present	Availability	None	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	Apache Software Foundation
Product	Apache APISIX
Versions	Default: unaffected affected from 3.12.0 to 3.18.0 (incl.)

Credits

sec-reex reporter
shreemaan-abhishek coordinator
shreemaan-abhishek remediation developer

References

https://lists.apache.org/thread.html/txn3br25kl657fh15rwcy1oht1xbpyyk

Problem Types

CWE-287 Improper Authentication CWE