Let's Encrypt · Vulnerability Disclosure

Lets Encrypt Vulnerability Disclosure

Vulnerability disclosure

Let’s Encrypt publishes a vulnerability disclosure policy for reporting security issues. A machine-readable /.well-known/security.txt is served. A dedicated security contact is published.

CertificatesLinux FoundationSecurityTLSACMEPKI
Program: security.txt present

Disclosure Policy

Security Contact

Contact
mailto:security@letsencrypt.org

Source

Vulnerability Disclosure

Raw ↑ 
generated: '2026-07-11'
method: searched
probe: true
source: https://letsencrypt.org/.well-known/security.txt
contact:
- mailto:security@letsencrypt.org
evidence:
- source: https://letsencrypt.org/.well-known/security.txt
  kind: security.txt (live probe)