CVE-2026-104411

HIGH 7.3

Ghost 6.22.1 before 6.64.0 Stored XSS via Local Storage File Uploads

CVSS Score

7.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	tryghost
Product	ghost
Published	Oct 2, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

TryGhost / Ghost

6.22.1 < 6.64.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/TryGhost/Ghost/security/advisories/GHSA-gfjp-2p8f-94qv vulncheck.com: https://www.vulncheck.com/advisories/ghost-6.22.1-before-6.64.0-stored-xss-via-local-storage-file-uploads

Credits

🔍 evertrustai 🔍 Enis-Atilgan 🔍 doanmanhducz 🔍 iamharshitgupta 🔍 5255fgh