VDB
CVE-2026-27588
CVE-2026-27588
PUBLISHED
CVSS 7.699999809265137 HIGH
Caddy: MatchHost becomes case-sensitive for large host lists (>100), enabling host-based route/auth bypass
EPSS 0.06% · 19.6th percentile
Risk Scores
CVSS v4.0
7.699999809265137
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
EPSS Score
0.06%
19.6th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| github.com | caddyserver/caddy/v2 | 0, 0 |
| caddyserver | caddy | *, 2.10.2, < 2.11.1 |
Timeline
- Feb 24, 2026 CVE Published
- Feb 25, 2026 EPSS Score
- Feb 25, 2026 PoC Published
- Feb 25, 2026 PoC Published
- Feb 26, 2026 EPSS Score
- Feb 27, 2026 CVE Updated
- Feb 28, 2026 EPSS Score
- Mar 1, 2026 EPSS Score
- Mar 3, 2026 EPSS Score
- Mar 4, 2026 EPSS Score
- Mar 6, 2026 EPSS Score
- Mar 7, 2026 EPSS Score
References
- https://github.com/caddyserver/caddy/security/advisories/GHSA-x76f-jf84-rqj8 url
- https://github.com/caddyserver/caddy/releases/tag/v2.11.1 url
- https://nvd.nist.gov/vuln/detail/CVE-2026-27588 advisory
- https://github.com/caddyserver/caddy/commit/eec32a0bb5a11651c6a7b04ce82dc50610f2b27e url
- https://github.com/caddyserver/caddy package
- https://pkg.go.dev/vuln/GO-2026-4541 url