Description

Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, Caddy's HTTP `path` request matcher is intended to be case-insensitive, but when the match pattern contains percent-escape sequences (`%xx`) it compares against the request's escaped path without lowercasing. An attacker can bypass path-based routing and any access controls attached to that route by changing the casing of the request path. Version 2.11.1 contains a fix for the issue.

INFO

Published Date :

2026-02-24T16:26:40.222Z

Last Modified :

2026-02-27T20:48:09.775Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-27587 vulnerability.

Vendors Products
Caddyserver
  • Caddy
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-27587.

URL Resource
https://github.com/caddyserver/caddy/releases/tag/v2.11.1 cve-icon cve-icon
https://github.com/caddyserver/caddy/security/advisories/GHSA-g7pc-pc7g-h8jh cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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SS Confidentiality
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Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact