# WebTrust "Principles and Criteria for Certification Authorities - SSL Baseline" Version 2.9 permitted for audit periods ending before 2026-11-29; WebTrust TLS Baseline Version 2.10 required thereafter. — TLS certificate and CA requirement effective dates (CA/Browser Forum, Chrome, Mozilla)

For WebTrust "Principles and Criteria for Certification Authorities - SSL Baseline" Version 2.9 permitted for audit periods ending before 2026-11-29; WebTrust TLS Baseline Version 2.10 required thereafter., requirement is WebTrust "Principles and Criteria for Certification Authorities - SSL Baseline" Version 2.9 permitted for audit periods ending before 2026-11-29; WebTrust TLS Baseline Version 2.10 required thereafter; effective date is 2026-11-29; authority is Mozilla Root Store Policy; scope is CA operators whose certificates are included in Mozilla's root store, recorded from its source on 2026-08-05.

- **Requirement:** WebTrust "Principles and Criteria for Certification Authorities - SSL Baseline" Version 2.9 permitted for audit periods ending before 2026-11-29; WebTrust TLS Baseline Version 2.10 required thereafter.
- **Effective date:** 2026-11-29 _(verified: appears in the quote below)_
- **Authority:** Mozilla Root Store Policy _(our reading, not quoted from the source)_
- **Scope:** CA operators whose certificates are included in Mozilla's root store _(our reading, not quoted from the source)_

## What the source says

> Version 2.9 permitted for audit periods ending before 2026-11-29

## Source

- https://www.mozilla.org/en-US/about/governance/policies/security-group/certs/policy/

Last verified: 2026-08-05. Review by: 2026-11-03.
Part of [TLS certificate and CA requirement effective dates (CA/Browser Forum, Chrome, Mozilla)](https://referencesource.org/tls-certificate-requirement-effective-dates/).