CVE-2026-31908— Apache APISIX: forward auth plugin allows header injection
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I. Basic Information for CVE-2026-31908
Vulnerability Information
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Vulnerability Title
Apache APISIX: forward auth plugin allows header injection
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
特殊命令到另一不同平面时的净化处理不恰当(特殊命令注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Apache Apisix 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Apisix是美国阿帕奇（Apache）基金会的一个云原生的微服务API网关服务。该软件基于 OpenResty 和 etcd 来实现，具备动态路由和插件热加载，适合微服务体系下的 API 管理。 Apache Apisix 2.12.0至3.15.0版本存在安全漏洞，该漏洞源于forward-auth插件配置问题，可能导致攻击者注入恶意标头。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache APISIX | 2.12.0 ~ 3.15.0 | - |
II. Public POCs for CVE-2026-31908
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|---|
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Same Patch Batch · Apache Software Foundation · 2026-04-14 · 4 CVEs total
| CVE-2026-31923 | Apache APISIX: Openid-connect `tls_verify` field is disabled by default | |
| CVE-2026-33929 | Apache PDFBox Examples: Path Traversal in PDFBox ExtractEmbeddedFiles Example Code | |
| CVE-2026-31924 | Apache APISIX: Plugin tencent-cloud-cls log export uses plaintext HTTP |
IV. Related Vulnerabilities
Same product: Apache APISIX
- CVE-2026-31923
Apache APISIX: Openid-connect `tls_verify` field is disabled - CVE-2026-31924
Apache APISIX: Plugin tencent-cloud-cls log export uses plai - CVE-2025-62232
Apache APISIX: basic-auth logs plaintext credentials at info - CVE-2025-46647
Apache APISIX: improper validation of issuer from introspect - CVE-2024-32638
Apache APISIX: Forward-Auth Request Smuggling
Same vendor: Apache Software Foundation
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Apache CloudStack: MinIO policy remains intact on bucket del
Same weakness: CWE-75
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V. Comments for CVE-2026-31908
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