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

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

Use of Cache Containing Sensitive Information

Overview ghost is a publishing platform Affected versions of this package are vulnerable to Use of Cache Containing Sensitive Information in the handling of the x-ghost-preview header when the application is deployed behind a shared caching layer. An attacker can inject malicious content into...

GHSA-62Q6-4HV4-VJRW Ghost: Cache-poisoning XSS in Ghost frontend via x-ghost-preview header

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

NPM: Ghost: Cache-poisoning XSS in Ghost frontend via x-ghost-preview header

NPM: Ghost: Cache-poisoning XSS in Ghost frontend via x-ghost-preview header vulnerability discovered by ? in WordPress Npm ghost versions = 4.0.0, = 6.36.0...

EUVD-2026-39027

Ghost: Cache-poisoning XSS in Ghost frontend via x-ghost-preview header...

BIT-GHOST-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

The CVE-2026-53943 entry describes a Ghost CMS vulnerability where, on sites behind a shared caching layer, an unauthenticated user can send an x-ghost-preview header that poisons cached responses, altering rendered frontend output. In affected configurations, this cached, request-specific previe...

CVE-2024-47215

An issue was discovered in Snowbridge setups sending data to Google Tag Manager Server Side. It involves attaching an invalid GTM SS preview header to events, causing them to be retried indefinitely. As a result, the performance of forwarding events to GTM SS overall can be affected latency,...

Snowbridge security vulnerabilities

Snowbridge is an open source application from Snowplow. A security vulnerability exists in Snowbridge that stems from an invalid GTM SS preview header that could lead to infinite event retries...