CA/Browser Forum

Welcome to the CA/Browser Forum

The Certification Authority Browser Forum (CA/Browser Forum) is a voluntary gathering of Certificate Issuers and suppliers of Internet browser software and other applications that use certificates (Certificate Consumers).

More information for about the forum and information for Site Owners, Developers, Auditors and Assessors, and Potential Members can be found in the About section of this website.

Recent posts

2026-06-18 Minutes of the Forum
June 18, 2026 by Minutes: CA/B Forum plenary Meeting - June 18, 2026 1. Roll Call – from recording 2. Read note-well The note-well was read by Dimitris in prior session.
2026-06-18 Minutes of the Server Certificate Working Group
June 18, 2026 by Wayne ThayerMinutes: Roll Call – from recording We also had the following persons present: Naresh Charugundla (Microsoft), Rajeev Mohindra (Microsoft), Logan Mabe (Microsoft) who were not registered in the Member’s tool. Read note-well The note-well was read by Dimitris. Review of Agenda The Agenda as provided on list prior to the call (see above). Minutes June 4, 2026 (Draft minutes were distributed on 2026-06-16) – are Approved Membership Applications No current Applications to review. Ballot Status SC101v2 (https://github.com/cabforum/servercert/pull/627) Clarify Authorization Domain Names (Aaron Gable) Ballot moved to V2 with substantive change being effective date in 3.2.2.5.3. A couple of other editorial updates also. Expected to go to discussion period tomorrow.
2026-06-17 Minutes of the S/MIME Certificate Working Group
June 17, 2026 by Minutes of SMCWG June 17, 2026 These are the Minutes of the meeting described in the subject of this message. Corrections and clarifications where needed are encouraged by reply.
More posts of the CA/Browser Forum
Latest releases
Server Certificate Requirements
SC098: Process RFC 8657 CAA Parameters - Jun 16, 2026

Code Signing Requirements
v3.8 - Aug 5, 2024

What’s Changed CSC-25: Import EV Guidelines to CS Baseline Requirements by @dzacharo in https://github.com/cabforum/code-signing/pull/38 Full Changelog: https://github.com/cabforum/code-signing/compare/v3.7...v3.8

S/MIME Requirements
v1.0.14 - Ballot SMC016 - May 5, 2026

This ballot maintains consistency between the S/MIME Baseline Requirements and the TLS Baseline Requirements with changes introduced by Ballots SC096 and SC097. Specifically, this ballot: Creates a carve-out of the logging requirements for DNSSEC specifically, stating these are not in scope. For audit purposes, change management logging is able to confirm if the appropriate controls are in effect or not. Sunsets all remaining use of SHA-1 signatures in Certificates and CRLs. It is noted that most uses of SHA-1 signatures are already deprecated by SC097. With this ballot, all unexpired Subordinate CA Certificates issuing S/MIME containing the SHA-1 signature algorithm must be revoked. This proposal does not prohibit the use of SHA-1 to generate issuerKeyHash or issuerNameHash values as currently required by RFC 5019. Includes minor formatting corrections.

Network and Certificate System Security Requirements
Version 2.0.5 (Ballot NS-008) - Jul 9, 2025

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The Certification Authority Browser Forum (CA/Browser Forum) is a voluntary gathering of Certificate Issuers and suppliers of Internet browser software and other applications that use certificates (Certificate Consumers).