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:
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 thefilterquery parameter containspasswordoremail.For more information
If you have any questions or comments about this advisory: