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CVE-2026-27590

🗓️ 24 Feb 2026 16:33:41Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 111 Views

Caddy FastCGI path split uses a lowercased index; Unicode length changes can misalign SCRIPT_NAME and PATH_INFO, risking web file execution; fixed in 2.11.1.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-27590
24 Feb 202616:33
attackerkb
alpinelinux
AlpineLinux
CVE-2026-27590
24 Feb 202616:33
alpinelinux
avleonov
Information Security Automation
March Linux Patch Wednesday
30 Mar 202620:00
avleonov
circl
Circl
CVE-2026-27590
23 Feb 202604:22
circl
cnnvd
CNNVD
Caddy 安全漏洞
24 Feb 202600:00
cnnvd
cvelist
Cvelist
CVE-2026-27590 Caddy: Unicode case-folding length expansion causes incorrect split_path index (SCRIPT_NAME/PATH_INFO confusion) in FastCGI transport
24 Feb 202616:33
cvelist
debian
Debian
[SECURITY] [DSA 6429-1] caddy security update
11 Aug 202603:36
debian
debiancve
Debian CVE
CVE-2026-27590
24 Feb 202616:33
debiancve
nessus
Tenable Nessus
Debian dsa-6429 : caddy - security update
11 Aug 202600:00
nessus
nessus
Tenable Nessus
Fedora 43 : caddy (2026-3dc324bd9a)
1 Jul 202600:00
nessus
Rows per page
NVD
Vulners
Node
caddyservercaddyRange<2.11.1
[
  {
    "vendor": "caddyserver",
    "product": "caddy",
    "versions": [
      {
        "version": "< 2.11.1",
        "status": "affected"
      }
    ]
  }
]

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17 Jun 2026 10:27Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.19.8
CVSS 49.3
EPSS0.00536
SSVC
111