DEBIAN-CVE-2026-27587
Record from OSV · Published February 24, 2026
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.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| caddy | Debian:12 | 2.6.2-5+deb12u1 |
| caddy | Debian:14 | 2.11.2-1 |
| caddy | Debian:13 | 2.6.2-12+deb13u1 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | caddy | 2.6.2-5, 0 |
| Debian:14 | caddy | 2.11.2-1~bpo13+1, 2.6.2-13, 2.6.2-14 |
| Debian:13 | caddy | 0, 2.6.2-12 |
Timeline
- Feb 24, 2026 CVE Published
- Oct 24, 2026 CVE Updated
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln DEBIAN-CVE-2026-27587
vulnetix vdb fixes DEBIAN-CVE-2026-27587Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/DEBIAN-CVE-2026-27587/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart