CVE-2026-31908

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-31908
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 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://lists.apache.org/thread/sob643s5lztov7x579j8o0c444t36n6b Mailing List Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/04/14/3 Mailing List Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:apisix:*:*:*:*:*:*:*:*
History

17 Apr 2026, 18:40

Type Values Removed Values Added
CPE cpe:2.3:a:apache:apisix:*:*:*:*:*:*:*:*
First Time Apache apisix
Apache
References () https://lists.apache.org/thread/sob643s5lztov7x579j8o0c444t36n6b - () https://lists.apache.org/thread/sob643s5lztov7x579j8o0c444t36n6b - Mailing List, Vendor Advisory
References () http://www.openwall.com/lists/oss-security/2026/04/14/3 - () http://www.openwall.com/lists/oss-security/2026/04/14/3 - Mailing List, Third Party Advisory

16 Apr 2026, 13:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 9.1

14 Apr 2026, 09:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-04-14 09:16

Updated : 2026-04-17 18:40

NVD link : CVE-2026-31908

Mitre link : CVE-2026-31908

CVE.ORG link : CVE-2026-31908

JSON object : View

Products Affected

apache

  • apisix
CWE
CWE-75

Failure to Sanitize Special Elements into a Different Plane (Special Element Injection)