CVE catalog
CVE-2026-27585
Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, the path sanitization routine in file matcher doesn't sanitize backslashes which can lead to bypassing path re
- Severity
- Medium · CVSS 6.9
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.37% · Oct 25, 2026
Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, the path sanitization routine in file matcher doesn't sanitize backslashes which can lead to bypassing path related security protections. It affects users with specific Caddy and environment configurations. Version 2.11.1 fixes the issue.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | caddy | sid | 2.11.4-1 | fixed |
| Debian | caddy | forky | 2.11.4-1 | fixed |
| Debian | caddy | trixie | 2.6.2-12+deb13u1 | fixed |
| Debian | caddy | trixie-security | 2.6.2-12+deb13u1 | fixed |
| Debian | caddy | bookworm | 2.6.2-5 | vulnerable |
| Debian | caddy | bookworm-security | 2.6.2-5+deb12u1 | fixed |
| Go | github.com/caddyserver/caddy/v2/modules/caddyhttp/fileserver | Not reported | 2.11.1 | fixed |
| Cpe | caddy | Not reported | Not reported | vulnerable |
| Go | github.com/caddyserver/caddy/v2 | Not reported | 2.11.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | caddy | source | sid | 2.11.2-1 | not yet assigned | Not reported | [1132041] |
| Debian | caddy | source | forky | 2.11.2-1 | not yet assigned | Not reported | [1132041] |
| Debian | caddy | source | trixie | 2.6.2-12+deb13u1 | not yet assigned | Not reported | [1132041] |
| Debian | caddy | source | bookworm | 2.6.2-5+deb12u1 | not yet assigned | Not reported | [1132041] |
| Go | github.com/caddyserver/caddy/v2/modules/caddyhttp/fileserver | go | Not reported | 2.11.1 | Not reported | Not reported | Not reported |
| Go | github.com/caddyserver/caddy/v2 | Go | Not reported | 2.11.1 | Not reported | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [caddy]Affected
Details (2)
2.6.2-5· amd64 · bookwormAffected · Fixed:
2.6.2-5+deb12u1nvd · caddy · debian · bookworm; nvd · caddy · debian · 12
2.6.2-5· arm64 · bookwormAffected · Fixed:
2.6.2-5+deb12u1nvd · caddy · debian · bookworm; nvd · caddy · debian · 12
[Debian 13 (Trixie)]
- [caddy]Affected
Details (5)
2.6.2-12+b3· amd64 · trixieAffected · Fixed:
2.6.2-12+deb13u1nvd · caddy · debian · 13
2.6.2-12+b3· arm64 · trixieAffected · Fixed:
2.6.2-12+deb13u1nvd · caddy · debian · 13
2.11.2-1~bpo13+1· amd64 · trixie-backportsFixed · Fixed:
2.6.2-12+deb13u1nvd · caddy · debian · 13
2.6.2-12+deb13u1· amd64 · trixie-securityFixed · Fixed:
2.6.2-12+deb13u1nvd · caddy · debian · 13
2.6.2-12+deb13u1· arm64 · trixie-securityFixed · Fixed:
2.6.2-12+deb13u1nvd · caddy · debian · 13
Observed:
References
- [https://github.com/advisories/GHSA-4xrr-hq4w-6vf4]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-27585]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-27585]
- [https://pkg.go.dev/vuln/GO-2026-4535]
- [https://security-tracker.debian.org/tracker/CVE-2026-27585]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27585.json]
[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [Go Vulnerability Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]