Rocboss paopao-ce through 0.6.0-alpha.3 IDOR via DownloadAttachment Endpoint

Rocboss paopao-ce through 0.6.0-alpha.3 contains an insecure direct object reference vulnerability in DownloadAttachment that allows authenticated users to access private media by supplying arbitrary content IDs. Attackers can enumerate sequential post_content ids via the /v1/attachment endpoint to obtain signed download URLs for other users' private, friend-only and following-only images, videos and attachments.

app/controllers/frontend/PostController.php in ROCBOSS V2.2.1 has SQL injection via the Post:doReward score paramter, as demonstrated by the /do/reward/3 URI.