CVE-2026-70588

### Impact The Universal Import feature in Ghost Admin failed to properly sanitize imported content resulting in XSS in post content. ### Vulnerable versions This vulnerability is present in Ghost from v5.26.0 up to v6.54.0. ### Patches v6.54.1 contains a fix for this issue. ### How to update For self-hosters using Docker, find [Docker's official Ghost image here](https://hub.docker.com/_/ghost). Updating a Docker-based Ghost instance [is documented here](https://docs.ghost.org/install/docker#updating-ghost). If your Ghost is a Ghost-CLI install see our documentation on [updating it to the latest version here](https://docs.ghost.org/update). ### Workarounds If upgrading immediately is not possible, avoid using the Universal Import feature. ### References Ghost thanks meifukun for disclosing this vulnerability responsibly. ### For more information If you have any questions or comments about this advisory, email us at [security@ghost.org](mailto:security@ghost.org).

Ghost is a Node.js content management system. From 5.26.0 until 6.54.1, the Universal Import feature in Ghost Admin failed to properly sanitize imported content resulting in XSS in post content. This issue is fixed in version 6.54.1.