CVE-2026-105649CWE-434CWE-79cross-site-scriptingunrestricted-file-upload

CVE-2026-105649

High · published October 6, 2026

CVSS v3.1
7.3
EPSS
0%
Percentile
21.7
In the wild
Unconfirmed
What it is

Ghost is a Node.js content management system. From 4.22.0 until 6.65.0, SVG media thumbnails and SVG images uploaded with a non-SVG file extension were stored without sanitization. This allowed any staff user, including Contributors, to host scripts on the site's domain, possibly resulting in compromise of other staff users' admin sessions. This issue is fixed in version 6.65.0.

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00302 · 21.7th percentile
Weaknesses
CWE-434 · Unrestricted Upload of File with Dangerous Type; CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-10-06T00:17Z
References (4)
https://github.com/TryGhost/Ghost/commit/80686226d23df56749f6b7ebb484850a8eba8072 · [email protected]https://github.com/TryGhost/Ghost/issues/30919 · [email protected]https://github.com/TryGhost/Ghost/releases/tag/v6.65.0 · [email protected]https://github.com/TryGhost/Ghost/security/advisories/GHSA-8575-cr6v-7jh4 · [email protected]
EPSS history
Timeline
  • 07 OCT 03:39Z
    EPSS moved — → 0%
    epss
  • 05 OCT 19:05Z
    Ghost: Stored XSS via SVG Uploads Bypassing Sanitization
    cvelistv5