Unrated severityNVD Advisory· Published Jun 19, 2026· Updated Jun 19, 2026
Apache APISIX: Identity Injection via forward-auth Plugin Missing Header Cleanup
CVE-2026-39998
Description
Improper Input Validation vulnerability in Apache APISIX.
The attacker can take advantage of certain configuration in forward-auth plugin to spoof identity headers. This issue affects Apache APISIX: from 2.12.0 through 3.16.0.
Users are recommended to upgrade to version 3.17.0, which fixes the issue.
Affected products
2Patches
Vulnerability mechanics
References
1- lists.apache.org/thread/vgkvy396010d7g6m0jrn4d3hjf2svlvvmitrevendor-advisory
News mentions
1- Apache APISIX: 12 CVEs Disclosed Across Nine Auth Plugins, All Fixed in 3.17.0Vypr Intelligence · Jun 19, 2026