May 13 Deadline: Let’s Encrypt launches 45-day certs, freezes mTLS, and moves to Gen Y intermediates. Is your automation ready for the triple-threat update?
mTLS
Critical Keylime flaw CVE-2026-1709 (CVSS 9.4) disables mTLS in v7.12.0-7.13.0. Unauthorized clients can access the registrar. Update or firewall now.