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Security: Loosen the admin referrer policy header value to allow the referring host to be sent from the admin area in all cases.

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This allows referrer-restricted content from third parties (such as images and fonts) to continue working in the admin area.

Props aranwer104, qcmiao

Fixes #43285

Merges [42830] to the 4.9 branch.

Built from https://develop.svn.wordpress.org/branches/4.9@42831


git-svn-id: http://core.svn.wordpress.org/branches/4.9@42661 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
John Blackbourn 2018-03-12 10:59:39 +00:00
parent 7546fcc64a
commit 9b7814a4a1
2 changed files with 6 additions and 4 deletions
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8
wp-admin/includes/misc.php
View File

@ -1099,15 +1099,17 @@ function wp_admin_canonical_url() {
* @since 4.9.0
*/
function wp_admin_headers() {
$policy = 'same-origin';
$policy = 'strict-origin-when-cross-origin';
/**
* Filters the admin referrer policy header value. Default 'same-origin'.
* Filters the admin referrer policy header value.
*
* @since 4.9.0
* @since 4.9.5 The default value was changed to 'strict-origin-when-cross-origin'.
*
* @link https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Referrer-Policy
*
* @param string $policy The referrer policy header value.
* @param string $policy The admin referrer policy header value. Default 'strict-origin-when-cross-origin'.
*/
$policy = apply_filters( 'admin_referrer_policy', $policy );

2
wp-includes/version.php
View File

@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
$wp_version = '4.9.5-alpha-42813';
$wp_version = '4.9.5-alpha-42831';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.