CVE-2026-104412
MediumCVSS 4.3Summary
Ghost from 0.5.0 before 6.64.0 does not correctly restrict staff role assignment, allowing users with the Editor or Super Editor role to assign their own role to other staff despite lacking permission to do so. An authenticated Editor or Super Editor can promote Author and Contributor users to Editor or Super Editor.
Risk Assessment
Risk of privilege escalation within the organization, where unauthorized users may gain higher roles, potentially leading to unauthorized content or configuration changes.
Recommendation
Update Ghost to version 6.64.0 or later, which includes a fix restricting role assignment.
Other vulnerabilities in Ghost
See all- CVE-2026-104417Medium
Ghost from 1.20.0 before 6.64.0 contains a path traversal vulnerability in theme translation file loading that allows authenticated administrators to read JSON files outside the active theme directory. Attackers can manipulate the locale setting to load JSON files elsewhere on the server, exposing server configuration secrets.
- CVE-2026-104416High
Ghost from 4.39.0 before 6.64.0 contains an information disclosure vulnerability in the Admin API that allows staff users to view secret tokens of pending staff invites. Staff users with invite viewing permission can accept pending invites for higher-privileged roles to escalate their privileges.
- CVE-2026-104415Low
Ghost from 0.7.2 before 6.64.0 contains an information disclosure vulnerability in the Admin API that allows staff-level users to determine the relative ordering of other staff users' password hashes. Authenticated staff users can query the Admin API to infer hash ordering, though this does not directly reveal hashes or enable practical password recovery.
- CVE-2026-104413High
Ghost from 5.94.0 before 6.64.0 contains a stored cross-site scripting vulnerability that allows staff users, including Contributors, to host arbitrary HTML by abusing bookmark card image fetching. Attackers can create bookmark cards that store non-image files from external websites as icons or thumbnails to compromise other staff users' admin sessions.
- CVE-2026-103292High
Ghost versions from 0.5.3 through versions prior to 6.50.0 fail to sanitize the data placed in the JSON-LD HTML tag emitted by the {{ghost_head}} helper. An authenticated user with limited privileges can inject unescaped content that is rendered as script in the published page, potentially leading to compromise of a staff user's admin session when that user views the affected page.
- CVE-2026-103291Medium
Ghost versions from 3.20.2 before 6.51.0 contain a server-side request forgery vulnerability in image dimension refetching, allowing authenticated staff users to trigger outbound HTTP requests to arbitrary URLs, including internal network endpoints.
- CVE-2026-103290Low
Ghost versions 6.14.0 through prior to 6.27.0 contain a path traversal vulnerability in the ImageSize service. Insufficient input validation of user-supplied file paths may allow authenticated staff users to access local files outside the intended data storage directories on the server.
- CVE-2026-103289Medium
Ghost from 5.9.0 before 6.44.1 contains an input validation issue in the comments feature that allows authenticated members to access comments they are not authorized to view, resulting in disclosure of restricted comment data.
- CVE-2026-103288Medium
Ghost from 5.9.0 before 6.44.1 contains an input validation flaw in the comment like feature. An authenticated member can delete comment likes or dislikes belonging to other users that they are not authorized to delete, resulting in an authorization bypass and unauthorized modification of comment engagement data.
- CVE-2026-103287Low
Ghost versions 1.18.0 before 6.27.0 contain a server-side request forgery (SSRF) vulnerability in the webhooks feature that allows staff users to probe internal hosts. Attackers with staff privileges can craft webhook requests to access internal network resources from the Ghost server.
Original NVD description (English source)
Ghost 0.5.0 before 6.64.0 does not correctly restrict staff role assignment, allowing users with the Editor or Super Editor role to assign their own role to other staff despite lacking permission to do so. An authenticated Editor or Super Editor can promote Author and Contributor users to Editor or Super Editor.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS