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Message-ID: <d2a84374-fb20-8f99-d634-c3dda9f4c247@apache.org>
Date: Tue, 14 Apr 2026 02:40:45 +0000
From: Abhishek Choudhary <shreemaanabhishek@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-31908: Apache APISIX: forward auth plugin allows header
 injection 

Severity: moderate 

Affected versions:

- Apache APISIX 2.12.0 through 3.15.0

Description:

Header injection vulnerability in Apache APISIX.

The attacker can take advantage of certain configuration in forward-auth plugin to inject malicious headers.
This issue affects Apache APISIX: from 2.12.0 through 3.15.0.

Users are recommended to upgrade to version 3.16.0, which fixes the issue.

Credit:

SeungMyung Lee (reporter)

References:

https://apisix.apache.org
https://www.cve.org/CVERecord?id=CVE-2026-31908

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