CA/Browser Forum

Email Lists

Forum Discussions are Now Public

The CA/Browser Forum has several public mailing lists, intended to be used for normal CA/Browser Forum discussions.

They are:

The activity on these lists can be followed by the public, but not posted to, unless they are an Interested Party. An Interested Party must review and accept the Forum’s IPR Policy and submit the signed IPR Policy Agreement (CAB Forum Agreement for IPR Policy v.1.3) to the CA/Browser Forum Chair.

Questions from the public may be submitted by email to the Questions list at questions@cabforum.org.

We also maintain other email lists, including the following:

Latest releases
Server Certificate Requirements
SC-081v3: Introduce Schedule of Reducing Validity and Data Reuse Periods - May 21, 2025

BR v2.1.5

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
v1.0.10 - Ballot SMC012 - Jul 2, 2025

Introduces a new method for validation of mailbox control, using ACME for S/MIME as defined in RFC 8823: Extensions to Automatic Certificate Management Environment for End-User S/MIME Certificates.

Network and Certificate System Security Requirements
v2.0 - Ballot NS-003 - Jun 26, 2024

Ballot NS-003: Restructure the NCSSRs in https://github.com/cabforum/netsec/pull/35

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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).