CVE-2026-104413
highpriority · track · 29EPSS 0.003 · 17 %ileUSEPSS · scored 2026-10-28
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6–8.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
advisories (4)
Vendor and ecosystem advisories describing this.
- GHSA-347q-26qq-h2p6Ghost: Stored XSS via Bookmark Card Images2026-10-07ghsa · osvUS
### Impact When creating a bookmark card, Ghost could store non-image files fetched from an external website as bookmark icons or thumbnails. This allowed any staff user, including Contributors, to host arbitrary HTML on the site's domain, possibly resulting in compromise of other staff users' admin sessions. ### Vulnerable versions This vulnerability is present in Ghost from v5.94.0 up to v6.64.0. ### Patches v6.64.0 contains a fix for this issue. ### How to update For self-hosters using Docker, find [Docker's official Ghost image here](https://hub.docker.com/_/ghost). Updating a Docker-based Ghost instance [is documented here](https://docs.ghost.org/install/docker#updating-ghost). If your Ghost is a Ghost-CLI install see our documentation on [updating it to the latest version here](https://docs.ghost.org/update). ### References Ghost thanks [Thai Son Dinh](https://github.com/sondt99) of VinSOC Labs and [白墨](https://github.com/5255fgh) for disclosing this vulnerability responsibly. ### For more information If you have any questions or comments about this advisory, email us at [security@ghost.org](mailto:security@ghost.org).
- BIT-ghost-2026-104413Ghost 5.94.0 before 6.64.0 Stored XSS via Bookmark Card Images2026-10-09vendor · osvUS
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.
- BIT-ghost-2026-105651Ghost: Stored XSS via Bookmark Card Images2026-10-13vendor · osvUS
Ghost is a Node.js content management system. From 5.94.0 until 6.64.0, when creating a bookmark card, Ghost could store non-image files fetched from an external website as bookmark icons or thumbnails. This allowed any staff user, including Contributors, to host arbitrary HTML on the site's domain, possibly resulting in compromise of other staff users' admin sessions. This issue is fixed in version 6.64.0.
- CVE-2026-105651Ghost: Stored XSS via Bookmark Card Images2026-10-05vendor · osvUS
Ghost is a Node.js content management system. From 5.94.0 until 6.64.0, when creating a bookmark card, Ghost could store non-image files fetched from an external website as bookmark icons or thumbnails. This allowed any staff user, including Contributors, to host arbitrary HTML on the site's domain, possibly resulting in compromise of other staff users' admin sessions. This issue is fixed in version 6.64.0.
also known as (3)
Other names and identifiers for this entity.
- BIT-ghost-2026-104413osv
- BIT-ghost-2026-105651osv
- GHSA-347q-26qq-h2p6osv
sources
Which sources assert this record, and when.
references (2) nvd
External citations — patches, advisories, analysis.
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