CVE-2026-27587
NixOS vulnerability analysis and mitigation

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.


SourceNVD

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CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

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