CVE-2026-104413

High

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.

SeverityHigh

CVSS7.3

Exploit probability—

Product

Ghost

PublishedOct 2, 2026

First seenOct 2, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

ghost6.64.0 or later

Vendor advisories

github.com/TryGhost/Ghost/security/advisories/GHSA-347q-26qq-h2p6

Affected products

Product	Affected versions	Fixed in
ghostnpm	5.94.0 ≤ v < 6.64.0	6.64.0

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.