CVE-2026-31908

critical · 9.1

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.

9.1

CVSS

0.5%

EPSS (exploit prob.)

43rd

EPSS percentile

2026-04-14

Published

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

Weaknesses

CWE-75

Affected products

Vendor	Product	Affected versions
apache	apisix	>= 2.12.0, < 3.16.0

Check a specific version with /api/v1/cve/match.

References

https://lists.apache.org/thread/sob643s5lztov7x579j8o0c444t36n6b
http://www.openwall.com/lists/oss-security/2026/04/14/3

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-31908