---
schema-version: v1.2.9
id: W3CWD-CSP3-20260311
title:
- content: Content Security Policy Level 3
  format: text/plain
link:
- content: https://www.w3.org/TR/2026/WD-CSP3-20260311/
  type: src
type: standard
docid:
- id: W3C WD-CSP3-20260311
  type: W3C
  primary: true
docnumber: WD-CSP3-20260311
date:
- type: published
  value: '2026-03-11'
contributor:
- organization:
    name:
    - content: World Wide Web Consortium
    abbreviation:
      content: W3C
    url: https://www.w3.org/
  role:
  - type: publisher
- person:
    name:
      given:
        forename:
        - content: Mike
          language:
          - en
          script:
          - Latn
      surname:
        content: West
        language:
        - en
        script:
        - Latn
  role:
  - type: editor
- person:
    name:
      given:
        forename:
        - content: Antonio
          language:
          - en
          script:
          - Latn
      surname:
        content: Sartori
        language:
        - en
        script:
        - Latn
  role:
  - type: editor
revdate: '2026-03-11'
language:
- en
script:
- Latn
docstatus:
  stage:
    value: Working Draft
relation:
- type: editionOf
  bibitem:
    id: W3CCSP3
    title:
    - content: Content Security Policy Level 3
      format: text/plain
    link:
    - content: https://www.w3.org/TR/CSP3/
      type: src
    docid:
    - id: W3C CSP3
      type: W3C
      primary: true
- type: obsoletes
  bibitem:
    id: W3CWD-CSP3-20260309
    title:
    - content: Content Security Policy Level 3
      format: text/plain
    link:
    - content: https://www.w3.org/TR/2026/WD-CSP3-20260309/
      type: src
    docid:
    - id: W3C WD-CSP3-20260309
      type: W3C
      primary: true
- type: updatedBy
  bibitem:
    id: W3CWD-CSP3-20260401
    title:
    - content: Content Security Policy Level 3
      format: text/plain
    link:
    - content: https://www.w3.org/TR/2026/WD-CSP3-20260401/
      type: src
    docid:
    - id: W3C WD-CSP3-20260401
      type: W3C
      primary: true
  description:
    content: errata
    format: text/plain
series:
- title:
    content: W3C Working Draft
    format: text/plain
  number: WD-CSP3-20260311
ext:
  schema-version: v1.0.0
  doctype:
    type: technicalReport
  editorialgroup:
  - name: Web Application Security Working Group