Vulnerability · Published Oct 2, 2026 · Assigned by VulnCheck

CVE-2026-104413Ghost 5.94.0 before 6.64.0 Stored XSS via Bookmark Card Images

High 7.3

In plain English

A high-severity cross-site scripting in Ghost from TryGhost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.3High

Exploit odds (30 days)0.3%top 82.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	ghost	6.64.0	GHSA-347q-26qq-h2p6

Affected products (as reported)

Vendor	Product	Versions
TryGhost	Ghost	5.94.0 – before 6.64.0

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

References

GitHub Security Advisory (GHSA-347q-26qq-h2p6) vendor-advisory
VulnCheck Advisory: Ghost 5.94.0 before 6.64.0 Stored XSS via Bookmark Card Images third-party-advisory