CVE-2026-105644: Ghost: Stored XSS via SVG Files in Content Imports

Severity: medium (CVSS 6.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-05 · updated 2026-10-06
Weakness: CWE-79

Description

Ghost is a Node.js content management system. From 4.0.0 until 6.67.0, SVG images included in content imports were stored without sanitization. An attacker who convinced an Administrator to import a crafted file could host scripts on the site's domain, possibly resulting in compromise of staff users' admin sessions. This issue is fixed in version 6.67.0.

Affected products

TryGhost Ghost: from 4.0.0, < 6.67.0

References

https://github.com/TryGhost/Ghost/commit/1be06f4e95a5eb159d14abda7660e689af13cff1
https://github.com/TryGhost/Ghost/pull/31060
https://github.com/TryGhost/Ghost/releases/tag/v6.66.0
https://github.com/TryGhost/Ghost/security/advisories/GHSA-hqq2-xqr2-fmx2

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