Vulnerability · Published Oct 5, 2026 · Assigned by GitHub_M

CVE-2026-105649Ghost: Stored XSS via SVG Uploads Bypassing Sanitization

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 23% 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 76.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	ghost	6.65.0	GHSA-8575-cr6v-7jh4

Affected products (as reported)

Vendor	Product	Versions
TryGhost	Ghost	>= 4.22.0, < 6.65.0

Weakness: CWE-79, CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

References

https://github.com/TryGhost/Ghost/security/advisories/GHSA-8575-cr6v-7jh4 x_refsource_CONFIRM
https://github.com/TryGhost/Ghost/issues/30919 x_refsource_MISC
https://github.com/TryGhost/Ghost/commit/80686226d23df56749f6b7ebb484850a8eba8072 x_refsource_MISC
https://github.com/TryGhost/Ghost/releases/tag/v6.65.0 x_refsource_MISC