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I. Basic Information for CVE-2026-27589
Vulnerability Information

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Vulnerability Title
Caddy vulnerable to cross-origin config application via local admin API /load (caddy)
Source: NVD (National Vulnerability Database)
Vulnerability Description
Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, the local caddy admin API (default listen `127.0.0.1:2019`) exposes a state-changing `POST /load` endpoint that replaces the entire running configuration. When origin enforcement is not enabled (`enforce_origin` not configured), the admin endpoint accepts cross-origin requests (e.g., from attacker-controlled web content in a victim browser) and applies an attacker-supplied JSON config. This can change the admin listener settings and alter HTTP server behavior without user intent. Version 2.11.1 contains a fix for the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨站请求伪造(CSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Caddy 跨站请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Caddy是Caddy公司的一款开源、跨平台的HTTP/Web服务器。 Caddy 2.11.1之前版本存在跨站请求伪造漏洞,该漏洞源于本地caddy管理API在未启用来源强制时接受跨域请求,可能导致应用攻击者提供的配置。
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
VendorProductAffected VersionsCPESubscribe
caddyservercaddy < 2.11.1 -
II. Public POCs for CVE-2026-27589
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III. Intelligence Information for CVE-2026-27589
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IV. Related Vulnerabilities
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