CVE-2026-31908

CRITICAL

Apache APISIX: forward auth plugin allows header injection

Title source: cna

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.

Exploits (1)

nomisec WORKING POC 1 stars
by MehranTurk · poc
https://github.com/MehranTurk/CVE-2026-31908

References (2)

Scores

CVSS v3 9.1
EPSS 0.0012
EPSS Percentile 31.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Details

CWE
CWE-75
Status published
Products (2)
apache/apisix 2.12.0 - 3.16.0
Apache Software Foundation/Apache APISIX 2.12.0 - 3.15.0
Published Apr 14, 2026
Tracked Since Apr 14, 2026