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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

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

No history.

Information

Published : 2026-04-14 09:16

Updated : 2026-06-17 10:34

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)

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