GHSA-jf2w-mq6r-56v8 · Severity: low · Ecosystem: go — Caddy allows enumeration of Certificates and Hostnames
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.
Conclusion & alert: CVE-2018-19148 is rated Exploit Available (50/100): CVSS Low severity, with medium exploitation likelihood (EPSS 0.86%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.17% | 0.86% | +0.69% |
| 2 | 2025-03-17 | 0.14% | 0.17% | +0.03% |
| 3 | 2023-03-07 | — | 0.14% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 3.7 | 3.0 | LOW |
|
2.2 | 1.4 | [email protected] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
GHSA-jf2w-mq6r-56v8 · Severity: low · Ecosystem: go — Caddy allows enumeration of Certificates and Hostnames
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2018-19148 unimportant priority: Debian including 1 source packages (caddy), 4 status rows across 4 suites (bookworm, forky, sid, trixie): resolved 4. | https://security-tracker.debian.org/tracker/CVE-2018-19148 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| caddyserver | caddy | <= 0.11.0 | cpe:2.3:a:caddyserver:caddy:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://github.com/mholt/caddy/issues/1303 | Issue Tracking Patch Third Party Advisory |
| https://github.com/mholt/caddy/issues/2334 | Issue Tracking Patch Third Party Advisory |
| https://github.com/mholt/caddy/pull/2015 | Issue Tracking Patch Third Party Advisory |
| https://securitytrails.com/blog/caddy-web-server-ssl-bug | Exploit Patch Third Party Advisory |