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.
Affected products
apache: apisix
References2
- lists.apache.org/thread/sob643s5lztov7x579j8o0c444t36n6b Mailing ListVendor Advisory
- www.openwall.com/lists/oss-security/2026/04/14/3 Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
9.1
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - EPSS — exploit probability
- 1% percentile: 45 · as of 12 November 2026
- CWE
- CWE-75
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