PT-2026-55102

Impact When Ghost is behind a shared caching layer that results in cached content being shared between different visitors e.g., Fastly, Cloudflare, nginx proxy cache, and others, an unauthenticated user could send an x-ghost-preview header that altered the rendered frontend response. In affected...

PT-2026-55069

Ghost is a Node.js content management system. From until 6.37.0, when Ghost is behind a shared caching layer that results in cached content being shared between different visitors, an unauthenticated user could send an x-ghost-preview header that altered the rendered frontend response. In affecte...

CVE-2026-53943

Ghost is a Node.js content management system. From until 6.37.0, when Ghost is behind a shared caching layer that results in cached content being shared between different visitors, an unauthenticated user could send an x-ghost-preview header that altered the rendered frontend response. In affecte...

CVE-2026-53943 Ghost: Cache-poisoning XSS in Ghost frontend via x-ghost-preview header

Ghost is a Node.js content management system. From until 6.37.0, when Ghost is behind a shared caching layer that results in cached content being shared between different visitors, an unauthenticated user could send an x-ghost-preview header that altered the rendered frontend response. In affecte...

CVE-2026-53943 Ghost: Cache-poisoning XSS in Ghost frontend via x-ghost-preview header

Ghost is a Node.js content management system. From until 6.37.0, when Ghost is behind a shared caching layer that results in cached content being shared between different visitors, an unauthenticated user could send an x-ghost-preview header that altered the rendered frontend response. In affecte...

CVE-2026-53943

Ghost is a Node.js content management system. From until 6.37.0, when Ghost is behind a shared caching layer that results in cached content being shared between different visitors, an unauthenticated user could send an x-ghost-preview header that altered the rendered frontend response. In affecte...