CVE-2026-104414 Ghost from 2.5.0 before 6.64.0 Stored XSS via oEmbed Photo Responses
Attackers can inject malicious scripts via oEmbed photo responses, compromising admin sessions in the Ghost CMS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-104414?
CVE-2026-104414 is a high-severity cross-site scripting vulnerability in TryGhost Ghost, published on 2 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-104414?
How do I fix CVE-2026-104414?
Upgrade to a fixed version.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-104414 being exploited?
There is no known exploitation of CVE-2026-104414 in the wild and no public exploit code.
Sources
Also known as GHSA-7wpv-mphg-4gmw, MINI-3c9r-g4g3-p88j.