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Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 13.2%
CVSS Severity
CVSS v3 Score 9.1
Products affected by CVE-2026-31908
  • Apache » Apisix » Version: 2.12.0
    cpe:2.3:a:apache:apisix:2.12.0
  • Apache » Apisix » Version: 2.12.1
    cpe:2.3:a:apache:apisix:2.12.1
  • Apache » Apisix » Version: 2.13.0
    cpe:2.3:a:apache:apisix:2.13.0
  • Apache » Apisix » Version: 2.13.1
    cpe:2.3:a:apache:apisix:2.13.1
  • Apache » Apisix » Version: 2.13.2
    cpe:2.3:a:apache:apisix:2.13.2
  • Apache » Apisix » Version: 2.13.3
    cpe:2.3:a:apache:apisix:2.13.3
  • Apache » Apisix » Version: 2.14.1
    cpe:2.3:a:apache:apisix:2.14.1
  • Apache » Apisix » Version: 2.15.0
    cpe:2.3:a:apache:apisix:2.15.0
  • Apache » Apisix » Version: 2.15.1
    cpe:2.3:a:apache:apisix:2.15.1
  • Apache » Apisix » Version: 2.15.2
    cpe:2.3:a:apache:apisix:2.15.2
  • Apache » Apisix » Version: 2.15.3
    cpe:2.3:a:apache:apisix:2.15.3
  • Apache » Apisix » Version: 2.99.0
    cpe:2.3:a:apache:apisix:2.99.0
  • Apache » Apisix » Version: 3.0.0
    cpe:2.3:a:apache:apisix:3.0.0
  • Apache » Apisix » Version: 3.1.0
    cpe:2.3:a:apache:apisix:3.1.0
  • Apache » Apisix » Version: 3.10.0
    cpe:2.3:a:apache:apisix:3.10.0
  • Apache » Apisix » Version: 3.11.0
    cpe:2.3:a:apache:apisix:3.11.0
  • Apache » Apisix » Version: 3.12.0
    cpe:2.3:a:apache:apisix:3.12.0
  • Apache » Apisix » Version: 3.13.0
    cpe:2.3:a:apache:apisix:3.13.0
  • Apache » Apisix » Version: 3.14.0
    cpe:2.3:a:apache:apisix:3.14.0
  • Apache » Apisix » Version: 3.14.1
    cpe:2.3:a:apache:apisix:3.14.1
  • Apache » Apisix » Version: 3.2.0
    cpe:2.3:a:apache:apisix:3.2.0
  • Apache » Apisix » Version: 3.2.1
    cpe:2.3:a:apache:apisix:3.2.1
  • Apache » Apisix » Version: 3.2.2
    cpe:2.3:a:apache:apisix:3.2.2
  • Apache » Apisix » Version: 3.3.0
    cpe:2.3:a:apache:apisix:3.3.0
  • Apache » Apisix » Version: 3.4.0
    cpe:2.3:a:apache:apisix:3.4.0
  • Apache » Apisix » Version: 3.4.1
    cpe:2.3:a:apache:apisix:3.4.1
  • Apache » Apisix » Version: 3.5.0
    cpe:2.3:a:apache:apisix:3.5.0
  • Apache » Apisix » Version: 3.6.0
    cpe:2.3:a:apache:apisix:3.6.0
  • Apache » Apisix » Version: 3.6.1
    cpe:2.3:a:apache:apisix:3.6.1
  • Apache » Apisix » Version: 3.7.0
    cpe:2.3:a:apache:apisix:3.7.0
  • Apache » Apisix » Version: 3.8.0
    cpe:2.3:a:apache:apisix:3.8.0
  • Apache » Apisix » Version: 3.8.1
    cpe:2.3:a:apache:apisix:3.8.1
  • Apache » Apisix » Version: 3.9.0
    cpe:2.3:a:apache:apisix:3.9.0
  • Apache » Apisix » Version: 3.9.1
    cpe:2.3:a:apache:apisix:3.9.1


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