Apache Roller Missing Authorization Lets Users Modify Other Weblogs

Apache Roller 6.1.5 contains a Missing Authorization vulnerability in its legacy XML-RPC Blogger and MetaWeblog APIs. An authenticated user can read, modify, or delete weblog content belonging to other weblogs because the handlers authenticate the caller but do not verify the caller's permission on the weblog or entry actually affected.

Only installations that enable the non-default global XML-RPC setting are affected; the per-weblog API flag defaults to enabled for UI-created weblogs.

• Affected version: Apache Roller 6.1.5
• Fixed version: Apache Roller 6.1.6 or later
• Mitigation: keep the XML-RPC feature disabled

Users are recommended to upgrade to Apache Roller 6.1.6 or later, which applies an explicit per-method permission check, or to keep the XML-RPC feature disabled.