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Medium · 5.8 CVE-2026-39998 EUVD-2026-38011GHSA-86hq-f9pp-3cr9

Apache APISIX: Identity Injection via forward-auth Plugin Missing Header Cleanup

Published Jun 19, 2026 · Updated Jun 22, 2026 · Assigned by apache

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

VendorProductAffectedFixed
Apache Software Foundation Apache APISIX 2.12.0 – ≤ 3.16.0 —

References