diff options
Diffstat (limited to 'includes/bootstrap.inc')
| -rw-r--r-- | includes/bootstrap.inc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/includes/bootstrap.inc b/includes/bootstrap.inc index efddf006a..b2f2b042e 100644 --- a/includes/bootstrap.inc +++ b/includes/bootstrap.inc @@ -1262,6 +1262,10 @@ function drupal_page_header() { $default_headers = array( 'Expires' => 'Sun, 19 Nov 1978 05:00:00 GMT', 'Cache-Control' => 'no-cache, must-revalidate, post-check=0, pre-check=0', + // Prevent browsers from sniffing a response and picking a MIME type + // different from the declared content-type, since that can lead to + // XSS and other vulnerabilities. + 'X-Content-Type-Options' => 'nosniff', ); drupal_send_headers($default_headers); } |