Merge branch 'connect-src' into 'develop'

Add blob: to connect-src CSP, fixes #1827

Closes #1827

See merge request pleroma/pleroma!2608

CHANGELOG.md

@@ -44,6 +44,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Fix follower/blocks import when nicknames starts with @
 - Filtering of push notifications on activities from blocked domains
 - Resolving Peertube accounts with Webfinger
+- `blob:` urls not being allowed by connect-src CSP
 
 ## [Unreleased (patch)]
 

lib/pleroma/plugs/http_security_plug.ex

@@ -78,7 +78,7 @@ defp csp_string do
         {img_src, media_src}
       end
 
-    connect_src = ["connect-src 'self' ", static_url, ?\s, websocket_url]
+    connect_src = ["connect-src 'self' blob: ", static_url, ?\s, websocket_url]
 
     connect_src =
       if Pleroma.Config.get(:env) == :dev do