CVE catalog
CVE-2018-19148
caddy: CVE-2018-19148
- Severity
- Low
- Source
- [NVD] · [CVE record]
- EPSS
- 0.86% · Oct 25, 2026
Caddy through 0.11.0 sends incorrect certificates for certain invalid requests, making it easier for attackers to enumerate hostnames. Specifically, when unable to match a Host header with a vhost in its configuration, it serves the X.509 certificate for a randomly selected vhost in its configuration. Repeated requests (with a nonexistent hostname in the Host header) permit full enumeration of all certificates on the server. This generally permits an attacker to easily and accurately discover the existence of and relationships among hostnames that weren't meant to be public, though this information could likely have been discovered via other methods with additional effort.
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 | not affected |
| Debian | caddy | forky | 2.11.4-1 | not affected |
| Debian | caddy | trixie | 2.6.2-12+deb13u1 | not affected |
| Debian | caddy | trixie-security | 2.6.2-12+deb13u1 | not affected |
| Debian | caddy | bookworm | 2.6.2-5 | not affected |
| Debian | caddy | bookworm-security | 2.6.2-5+deb12u1 | not affected |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | caddy | source | sid | Not affected | unimportant | Not reported | Not reported |
| Debian | caddy | source | forky | Not affected | unimportant | Not reported | Not reported |
| Debian | caddy | source | trixie | Not affected | unimportant | Not reported | Not reported |
| Debian | caddy | source | bookworm | Not affected | unimportant | Not reported | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [caddy]Unknown
Details (2)
2.6.2-5· amd64 · bookwormNot affected
dsa · caddy · debian · bookworm
2.6.2-5· arm64 · bookwormNot affected
dsa · caddy · debian · bookworm
Observed: