CACAO Layout Extension v1.0 approved as a Committee Specification

OASIS is pleased to announce that CACAO Security Playbooks Version 2.0 from the OASIS Collaborative Automated Course of Action Operations (CACAO) for Cyber Security TC [1] has been approved as an OASIS Committee Specification.

Collaborative Automated Course of Action Operations (CACAO) is a schema and taxonomy for cybersecurity playbooks. The CACAO specification describes how these playbooks can be created, documented, and shared in a structured and standardized way across organizational boundaries and technological solutions. This specification defines the CACAO Layout Extension for the purpose of visually representing CACAO playbooks accurately and consistently across implementations.

This Committee Specification is an OASIS deliverable, completed and approved by the TC and fully ready for testing and implementation.

CACAO Layout Extension Version 1.0
Committee Specification 01
04 April 2024

Editable Source:


Members of the CACAO TC [1] approved this specification by Special Majority Vote. The specification had been released for public review as required by the TC Process [2]. The vote to approve as a Committee Specification passed [3], and the document is now available online in the OASIS Library as referenced above.

Our congratulations to the TC on achieving this milestone and our thanks to the reviewers who provided feedback on the specification drafts to help improve the quality of the work.

========== Additional references:
[1] OASIS Collaborative Automated Course of Action Operations (CACAO) for Cyber Security TC

[2] Public review metadata document:
– Comment resolution log:

[3] Approval ballot:

Call for Consent for DocBook TC Schema

The DocBook TC members [1] have approved submitting the following Committee Specification to the OASIS Membership in a call for consent for OASIS Standard:

DocBook Schema Version 5.2
Committee Specification 01
19 July 2023

This is a call to the primary or alternate representatives of OASIS Organizational Members to consent or object to this approval. You are welcome to register your consent explicitly on the ballot; however, your consent is assumed unless you register an objection [2]. To register an objection, you must: 

  1. Indicate your objection on this ballot, and
  2. Provide a reason for your objection and/or a proposed remedy to the project.

You may provide the reason in the comment box or by email to the DocBook TC on its comment mailing list [3]. If you provide your reason by email, please indicate in the subject line that this is in regard to the Call for Consent. Note that failing to provide a reason and/or remedy may result in an objection being deemed invalid.


The Call for Consent opens on January 24, 2023 00:00 UTC and closes on February 7, 2024 23:59 UTC [4]. You can access the ballot at:

Internal link for voting members:

Publicly visible link:

OASIS members should ensure that their organization’s voting representative responds according to the organization’s wishes. If you do not know the name of your organization’s voting representative is, go to the My Account page at:

Then click the link for your Company (at the top of the page) and review the list of users for the name designated as “Primary”.

Additional information

[1]Docbook TC

Project IPR page


[3] Comments may be submitted to the TC by any person through the use of the OASIS TC Comment Facility as explained in the instructions located via the button labeled “Send A Comment” at the top of the TC public home page, or directly at:

Comments submitted for this work and for other work of this TC/OP are publicly archived and can be viewed at:

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