CVE-2026-49872

High

Description

Improper Authentication vulnerability in Apache APISIX. When the cas-auth plugin is used in a route, an attacker can possibly authenticate itself with credentials from a different source. This issue affects Apache APISIX: from 3.0.0 through 3.16.0. Users are recommended to upgrade to version 3.17.0, which fixes the issue.

SeverityHigh

CVSS8.1

Exploit probability—

Product

Apache Apisix

PublishedJun 19, 2026

First seenJun 19, 2026

Weakness typeCWE-287Improper authentication

How to fix

Update

apache apisix3.17.0 or later

Vendor advisories

lists.apache.org/thread/bzjpo60ygxo7kxdqf7vw3l5zw2lh6m5k

Affected products

Product	Affected versions	Fixed in
apache apisix	3.0.0 ≤ v < 3.17.0	3.17.0

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