Lucene search
+L

CVE-2026-52845

🗓️ 23 Jun 2026 17:52:01Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 170 Views🌐 WEB

Caddy header bypass in forward_auth enables header injection into PHP FastCGI apps; fixed in 2.11.4.

Related
Detection
Affected
Refs
Paths
NVD
Vulners
Node
caddyservercaddyRange<2.11.4
[
  {
    "vendor": "caddyserver",
    "product": "caddy",
    "versions": [
      {
        "version": "< 2.11.4",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
Identity headers (e.g., HTTP_AUTHORIZATION, HTTP_X_USER_ID)header/php_fastcgiCaddy's forward_auth copy_headers fails to delete headers containing underscores (e.g., X-User_ID), which are later normalized to CGI variables by php_fastcgi, allowing header injection.CWE-287, CWE-290, CWE-444

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation