Critical (9.8) in caddyserver caddy. EPSS 2.7% chance of exploitation in the next 30 days. Fixed in github.com/caddyserver/caddy 0.10.13.
Caddy before 0.10.13 mishandles TLS client authentication, as demonstrated by an authentication bypass caused by the lack of the StrictHostMatching mode.
Severity
CVSS 3.1
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
2.7% chance of exploitation in the next 30 days; higher than 86% of CVEs (scores of 2026-10-31)