CVE-2026-31908

critical

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.

References

https://lists.apache.org/thread/sob643s5lztov7x579j8o0c444t36n6b

http://www.openwall.com/lists/oss-security/2026/04/14/3

Details

Source: Mitre, NVD

Published: 2026-04-14

Updated: 2026-04-16

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 9.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: Critical

EPSS

EPSS: 0.00029