Vulnerability · Published Oct 2, 2026 · Assigned by VulnCheck

CVE-2026-104411Ghost 6.22.1 before 6.64.0 Stored XSS via Local Storage File Uploads

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 6.22.1 before 6.64.0 contains a stored cross-site scripting vulnerability that allows staff users to host scripts by uploading files served with extension-derived content types on the default local storage adapter. Attackers can upload script-bearing files to the site's domain to compromise other staff users' admin sessions.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	ghost	6.64.0	GHSA-gfjp-2p8f-94qv

Affected products (as reported)

Vendor	Product	Versions
TryGhost	Ghost	6.22.1 – 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-gfjp-2p8f-94qv) vendor-advisory
VulnCheck Advisory: Ghost 6.22.1 before 6.64.0 Stored XSS via Local Storage File Uploads third-party-advisory