What is CVE-2026-104411?

CVE-2026-104411 is a high-severity vulnerability in Tryghost Ghost, classified under Cross-site Scripting. CVSS score: 7.3/10. Published 2026-10-02.

How severe is CVE-2026-104411?

High severity. CVSS v3 base score is 7.3 out of 10.

XSS in Tryghost Ghost

CVE-2026-104411

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-02.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Tryghost Ghost

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/TryGhost/Ghost/security/advisories/GHSA-gfjp-2p8f-94qv (vendor-advisory)
www.vulncheck.com/advisories/ghost-6.22.1-before-6.64.0-stored-xss-via-local-st… (third-party-advisory)

Frequently asked questions

What is CVE-2026-104411?: CVE-2026-104411 is a high-severity vulnerability in Tryghost Ghost, classified under Cross-site Scripting. CVSS score: 7.3/10. Published 2026-10-02.
How severe is CVE-2026-104411?: High severity. CVSS v3 base score is 7.3 out of 10.