CVE-2026-70596: Improper Neutralization of Input During Web Page Generation

Ghost is a Node.js content management system. From 4.9.0 until 6.54.1, an input validation issue allowed any staff user to create a post with content in featureimagecaption that could be used to hijack another staff user's Ghost Admin session, resulting in privilege escalation. This issue is fixe...

PT-2026-68990

Impact A validation issue allowed some functionality, such as Webmentions, to be abused by an unauthenticated user to make limited HTTP requests to hosts in the Ghost server's internal network. A successful attack would not result in any response data being returned. Vulnerable versions This...

PT-2026-68195

Name of the Vulnerable Software and Affected Versions Ghost versions 4.9.0 through 6.54.0 Description An input validation issue allows any staff user to create a post containing malicious content within the feature image caption variable. This can be exploited to hijack the Ghost Admin session of...

PT-2026-68976

Impact An input validation issue allowed any staff user to create a post with content that could be used to hijack another staff user's Ghost Admin session resulting in privilege escalation. Vulnerable versions This vulnerability is present in Ghost from v4.9.0 up to v6.54.0. Patches v6.54.1...

CVE-2026-70595: Server-Side Request Forgery (SSRF)

Ghost is a Node.js content management system. From 6.26.0 until 6.54.1, a validation issue allowed some functionality, such as Webmentions, to be abused by an unauthenticated user to make limited HTTP requests to hosts in the Ghost server's internal network. A successful attack would not result i...

PT-2026-68194

Name of the Vulnerable Software and Affected Versions Ghost versions 6.26.0 through 6.54.0 Description A validation issue in the Webmentions functionality allows an unauthenticated user to perform limited HTTP requests to hosts within the internal network of the Ghost server. This type of attack...

CVE-2026-70594

Ghost is a Node.js content management system. From 2.2.0 until 6.54.1, Ghost Admin did not invalidate existing sessions on login which could have allowed for session fixation attacks. Successful exploitation would have required another vulnerability on the same domain where Ghost Admin was hosted...

CVE-2026-70592

Ghost is a Node.js content management system. From 1.20.1 until 6.54.1, an Administrator-level user could remotely overwrite certain files on the filesystem through the database backup filename, leading to integrity and availability issues. The database export endpoint failed to reject path...

CVE-2026-70593

Ghost is a Node.js content management system. From 0.10.0 until 6.54.1, a vulnerability in custom themes allowed a staff user to write files outside of the uploads directory. This could be used to alter the behavior of the installation through custom theme upload path traversal in LocalStorageBas...

CVE-2026-70589

Ghost is a Node.js content management system. From 4.22.0 until 6.54.1, a missing validation check allowed users to redeem subscription offers that were no longer active. This issue is fixed in version 6.54.1...

CVE-2026-70591

Ghost is a Node.js content management system. From 0.10.0 until 6.54.1, a Server-Side Request Forgery in Ghost Admin image fetching allowed any staff-level user to perform a blind HTTP GET request against internal hosts. No output was returned, but this could have been used to probe open ports on...

CVE-2026-70590

Ghost is a Node.js content management system. Prior to 6.54.1, any staff-level user was able to leak the hashed passwords of other staff users through the Ghost Admin API. An offline password-guessing attack against the hashes could lead to account takeover if successful, but Device Verification...

GHSA-XM43-3M56-W3WF Ghost: Paid gift memberships obtainable at minimal cost via the donations feature

Impact A vulnerability in Ghost's public donation checkout flow allowed an unauthenticated attacker to obtain full paid gift memberships for a minimal payment. No customer or member data was exposed, and the issue could not be used to steal money from a site or its members. Vulnerable versions Th...

EUVD-2026-42658

Ghost: Paid gift memberships obtainable at minimal cost via the donations feature...

NPM: Ghost: Paid gift memberships obtainable at minimal cost via the donations feature

NPM: Ghost: Paid gift memberships obtainable at minimal cost via the donations feature vulnerability discovered by ? in WordPress Npm ghost versions = 6.27.0, 6.44.0...

Ghost: Paid gift memberships obtainable at minimal cost via the donations feature

Impact A vulnerability in Ghost's public donation checkout flow allowed an unauthenticated attacker to obtain full paid gift memberships for a minimal payment. No customer or member data was exposed, and the issue could not be used to steal money from a site or its members. Vulnerable versions Th...

NPM: Ghost: Member existence leak via magic link sign-in response

NPM: Ghost: Member existence leak via magic link sign-in response vulnerability discovered by ? in WordPress Npm ghost versions = 5.18.0, 6.21.1...

EUVD-2026-39022

Ghost: Member existence leak via magic link sign-in response...

Ghost: Member existence leak via magic link sign-in response

Impact A discrepancy in responses from the members signin endpoints made it possible for an unauthenticated attacker to determine whether a given email address belongs to a registered member of a Ghost site. Vulnerable versions This vulnerability is present in Ghost from v5.18.0 up to v6.21.0...

GHSA-CHGM-3698-JM42 Ghost: Member existence leak via magic link sign-in response

Impact A discrepancy in responses from the members signin endpoints made it possible for an unauthenticated attacker to determine whether a given email address belongs to a registered member of a Ghost site. Vulnerable versions This vulnerability is present in Ghost from v5.18.0 up to v6.21.0...