CVE-2026-53948 Ghost: File Upload Content-Type Spoofing

Ghost is a Node.js content management system. From 6.19.4 until 6.21.1, insufficient validation of the client-supplied Content-Type on Ghost's Admin API file upload endpoint allowed uploaded files to be served from the site with an attacker-chosen content type on S3/GCS storage backends. On...

CVE-2026-53948 Ghost: File Upload Content-Type Spoofing

Ghost is a Node.js content management system. From 6.19.4 until 6.21.1, insufficient validation of the client-supplied Content-Type on Ghost's Admin API file upload endpoint allowed uploaded files to be served from the site with an attacker-chosen content type on S3/GCS storage backends. On...

CVE-2026-53948

Ghost is a Node.js content management system. From 6.19.4 until 6.21.1, insufficient validation of the client-supplied Content-Type on Ghost's Admin API file upload endpoint allowed uploaded files to be served from the site with an attacker-chosen content type on S3/GCS storage backends. On...

CVE-2026-53948 Ghost: File Upload Content-Type Spoofing

Ghost is a Node.js content management system. From 6.19.4 until 6.21.1, insufficient validation of the client-supplied Content-Type on Ghost's Admin API file upload endpoint allowed uploaded files to be served from the site with an attacker-chosen content type on S3/GCS storage backends. On...

CVE-2026-53949

Ghost is a Node.js content management system. From 5.46.1 until 6.21.2, the validation applied to filters on the public API endpoints could be partially bypassed, making it possible to reveal private fields via a brute force attack. If SQLite was used as the database password hashes were fully...

CVE-2026-53949 Ghost Content API filter bypass reveals private fields

Ghost is a Node.js content management system. From 5.46.1 until 6.21.2, the validation applied to filters on the public API endpoints could be partially bypassed, making it possible to reveal private fields via a brute force attack. If SQLite was used as the database password hashes were fully...

CVE-2026-53949

Summary (CVE-2026-53949) Ghost CMS (Node.js). Affected versions: 5.46.1–6.21.2. Description: validation on filters for public API endpoints could be partially bypassed, enabling disclosure of private fields via brute-force. Impact depends on database: with SQLite, password hashes were fully acces...

CVE-2026-53949 Ghost Content API filter bypass reveals private fields

Ghost is a Node.js content management system. From 5.46.1 until 6.21.2, the validation applied to filters on the public API endpoints could be partially bypassed, making it possible to reveal private fields via a brute force attack. If SQLite was used as the database password hashes were fully...

CVE-2026-53949 Ghost Content API filter bypass reveals private fields

Ghost is a Node.js content management system. From 5.46.1 until 6.21.2, the validation applied to filters on the public API endpoints could be partially bypassed, making it possible to reveal private fields via a brute force attack. If SQLite was used as the database password hashes were fully...

CVE-2026-53950 @tryghost/activitypub: XSS in Ghost's ActivityPub client

@tryghost/activitypub is Ghost’s social/federation client app. Prior to 3.1.0, the ActivityPub client in Ghost was vulnerable to JavaScript injection on posts shared by a maliciously customised ActivityPub server. This vulnerability is fixed in 3.1.0...

CVE-2026-53950

@tryghost/activitypub is Ghost’s social/federation client app. Prior to 3.1.0, the ActivityPub client in Ghost was vulnerable to JavaScript injection on posts shared by a maliciously customised ActivityPub server. This vulnerability is fixed in 3.1.0...

CVE-2026-53950 @tryghost/activitypub: XSS in Ghost's ActivityPub client

@tryghost/activitypub is Ghost’s social/federation client app. Prior to 3.1.0, the ActivityPub client in Ghost was vulnerable to JavaScript injection on posts shared by a maliciously customised ActivityPub server. This vulnerability is fixed in 3.1.0...

CVE-2026-53950

CVE-2026-53950 affects @tryghost/activitypub (Ghost’s ActivityPub client). Before 3.1.0, the ActivityPub client was susceptible to JavaScript injection on posts shared from a maliciously customized ActivityPub server. The issue is fixed in 3.1.0. The associated metrics indicate a high-severity im...

CVE-2026-53950 @tryghost/activitypub: XSS in Ghost's ActivityPub client

@tryghost/activitypub is Ghost’s social/federation client app. Prior to 3.1.0, the ActivityPub client in Ghost was vulnerable to JavaScript injection on posts shared by a maliciously customised ActivityPub server. This vulnerability is fixed in 3.1.0...

PT-2026-52073

Name of the Vulnerable Software and Affected Versions Ghost versions 5.46.1 through 6.21.1 Description Validation applied to filters on public API endpoints could be partially bypassed, allowing the disclosure of private fields through a brute force attack. The impact varies by database: when usi...

PT-2026-52072

Name of the Vulnerable Software and Affected Versions Ghost versions 6.19.4 through 6.21.0 Description Insufficient validation of the client-supplied Content-Type on the Admin API file upload endpoint allows uploaded files to be served with an attacker-chosen content type when using S3 or GCS...

PT-2026-52070

Name of the Vulnerable Software and Affected Versions Ghost versions 6.19.4 through 6.21.0 Description Ghost, a Node.js content management system, fails to restrict outbound HTTP requests when refetching missing image dimensions during post re-rendering. An authenticated staff user with permissio...

PT-2026-52071

Name of the Vulnerable Software and Affected Versions Ghost versions 5.18.0 through 6.21.0 Description A discrepancy in responses from the members signin endpoints allows an unauthenticated attacker to determine if a specific email address is registered as a member of the site. Recommendations...

CVE-2026-53948: Unrestricted Upload of File with Dangerous Type

Ghost is a Node.js content management system. From 6.19.4 until 6.21.1, insufficient validation of the client-supplied Content-Type on Ghost's Admin API file upload endpoint allowed uploaded files to be served from the site with an attacker-chosen content type on S3/GCS storage backends. On...

CVE-2026-53944: Incomplete List of Disallowed Inputs

Ghost is a Node.js content management system. From 6.0.9 until 6.21.1, when making an external request, it is possible to bypass the IP filter that ensures the request isn't going to an internal service using an IPv6 literal which maps to a private IPv4 address. This vulnerability is fixed in...