CVE-2026-49871Apache APISIX: cas-auth login CSRF / session injection issue

Description

Cross-Site Request Forgery (CSRF) vulnerability in the cas-auth plugin under default configurations. This defect allows a remote attacker that manages to send a victim to a webpage controlled by them can cause the victim's browser to become authenticated as a different identity. Actions the victim takes upstream are then attributed to attackers identity. 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.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://lists.apache.org/thread/1ozsnss0lof4gpwq763d66oxwxt3sycp vendor-advisoryVendor AdvisoryMailing List
• http://www.openwall.com/lists/oss-security/2026/06/19/14 Third Party Advisory