The Stream plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.2.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to access all Stream activity records via the Heartbeat API.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Stream Plugin | — | Update stream plugin to version 4.2.1, or a newer patched version | Aug 7, 2026 | Aug 6, 2026 |
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