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Vulnerability record · CVE-2026-31908 · published 14 April 2026

CVE-2026-31908: Apache apisix vulnerability

Apache · Apisix

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 3.1 Critical EPSS 0.60% · top 53.6% CWE-75 · CWE-75
9.1CVSS 3.1 base score
0.60%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-31908), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.