CVE-2023-31133 Information

Description

Ghost is an app for new-media creators with tools to build a website publish content send newsletters and offer paid subscriptions to members. Prior to version 5.46.1 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. Maintainers 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. v5.46.1 contains a fix for this issue. As a workaround add a block for requests to /ghost/api/content/ where the filter query parameter contains password or email.

Reference

https://github.com/TryGhost/Ghost/releases/tag/v5.46.1 https://github.com/TryGhost/Ghost/security/advisories/GHSA-r97q-ghch-82j9 https://github.com/TryGhost/Ghost/commit/b3caf16005289cc9909488391b4a26f3f4a66a90