Vulnerability · Published Oct 2, 2026 · Assigned by VulnCheck

CVE-2026-104414Ghost from 2.5.0 before 6.64.0 Stored XSS via oEmbed Photo Responses

High 8.1

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 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)0.3%top 79.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Ghost from 2.5.0 before 6.64.0 contains a stored cross-site scripting vulnerability that allows attackers to inject untrusted scripts into post content via oEmbed photo responses. Attackers can host malicious oEmbed photo responses so that embedding their URL stores scripts that run in the Ghost editor, published site, and newsletter emails, compromising staff admin sessions.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	ghost	6.64.0	GHSA-v3xr-g6p2-fvgv

Affected products (as reported)

Vendor	Product	Versions
TryGhost	Ghost	2.5.0 – before 6.64.0

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

References

GitHub Security Advisory (GHSA-v3xr-g6p2-fvgv) vendor-advisory
VulnCheck Advisory: Ghost from 2.5.0 before 6.64.0 Stored XSS via oEmbed Photo Responses third-party-advisory