### Impact

Due to a lack of validation when filtering on the public API endpoints, it is possible to reveal private fields via a brute force attack.

Ghost(Pro) has already been patched. We can find no evidence that the issue was exploited on Ghost(Pro) prior to the patch being added.

Self-hosters are impacted if running Ghost a version below v5.46.1. Immediate action should be taken to secure your site – see patches and workarounds below.

### Patches

v5.46.1 contains a fix for this issue.

### Workarounds

Add a block for requests to `/ghost/api/content/*` where the `filter` query parameter contains `password` or `email`.

### For more information

If you have any questions or comments about this advisory:

* Email us at [[email protected]](mailto:[email protected])Read More