Content Security Policy Level 2

- REC

Mitigate cross-site scripting attacks by whitelisting allowed sources of script, style, and other resources. CSP 2 adds hash-source, nonce-source, and five new directives

IE

  1. 5.5 - 10
  2. 11

Edge

  1. 12 - 14
  2. 15 - 18
  3. 79 - 81
  4. 83

Firefox

  1. 2 - 30
  2. 31 - 34
  3. 35
  4. 36 - 44
  5. 45 - 75
  6. 76
  7. 77 - 78

Chrome

  1. 4 - 35
  2. 36 - 38
  3. 39
  4. 40 - 81
  5. 83
  6. 84 - 86

Safari

  1. 3.1 - 9.1
  2. 10 - 13
  3. 13.1
  4. TP

Opera

  1. 9 - 22
  2. 23 - 25
  3. 26
  4. 27 - 67
  5. 68

iOS Safari

  1. 3.2 - 9.3
  2. 10 - 13.3
  3. 13.4

Opera Mini

  1. all

Android Browser

  1. 2.1 - 4.4.4
  2. 81

Blackberry Browser

  1. 7
  2. 10

Opera Mobile

  1. 10 - 12.1
  2. 46

Chrome for Android

  1. 81

Firefox for Android

  1. 68

IE Mobile

  1. 10
  2. 11

UC Browser for Android

  1. 12.12

Samsung Internet

  1. 4 - 10.1
  2. 11.1

QQ Browser

  1. 10.4

Baidu Browser

  1. 7.12

KaiOS Browser

  1. 2.5
Resources:
MDN Web Docs - Content Security Policy
HTML5Rocks article