CVE-2021-29484 – DOM XSS in Theme Preview

https://notcve.org/view.php?id=CVE-2021-29484

Ghost is a Node.js CMS. An unused endpoint added during the development of 4.0.0 has left sites vulnerable to untrusted users gaining access to Ghost Admin. Attackers can gain access by getting logged in users to click a link containing malicious code. Users do not need to enter credentials and may not know they've visited a malicious site. Ghost(Pro) has already been patched. • https://blog.sonarsource.com/ghost-admin-takeover https://forum.ghost.org/t/critical-security-update-available-for-ghost-4-x/22290 https://github.com/TryGhost/Ghost/security/advisories/GHSA-9fgx-q25h-jxrg https://www.npmjs.com/package/ghost • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •