CVE-2026-31908

CRITICAL EPSS 40.3%
Published Apr 14, 20262mo ago · Modified Jun 17, 20262w ago
9.1 CVSS 3.1
Critical
Find Similar
Published Apr 14, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
9.1
Exploitability
3.9
Impact
5.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
40.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-75

Affected Products 1

VendorProductVersionRange
apacheapisix*≥2.12.0  –  <3.16.0

References 2

  • openwall.com http://www.openwall.com/lists/oss-security/2026/04/14/3
    Mailing ListThird Party Advisory
  • lists.apache.org https://lists.apache.org/thread/sob643s5lztov7x579j8o0c444t36n6b
    Mailing ListVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.