diff --git a/server/middlewares/csp.ts b/server/middlewares/csp.ts
index d484b3021..d11d70790 100644
--- a/server/middlewares/csp.ts
+++ b/server/middlewares/csp.ts
@@ -7,8 +7,8 @@ const baseDirectives = Object.assign({},
     connectSrc: ['*', 'data:'],
     mediaSrc: ["'self'", 'https:', 'blob:'],
     fontSrc: ["'self'", 'data:'],
-    imgSrc: ["'self'", 'data:'],
-    scriptSrc: ["'self' 'unsafe-inline' 'unsafe-eval'"],
+    imgSrc: ["'self'", 'data:', 'blob:'],
+    scriptSrc: ["'self' 'unsafe-inline' 'unsafe-eval'", 'blob:'],
     styleSrc: ["'self' 'unsafe-inline'"],
     objectSrc: ["'none'"], // only define to allow plugins, else let defaultSrc 'none' block it
     formAction: ["'self'"],