High severity · published Oct 2, 2026
CVE-2026-104414
Ghost from 2.5.0 before 6.64.0 Stored XSS via oEmbed Photo Responses
8.1
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GH
Ghost · TryGhost
2.5.0 before 6.64.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-104414
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-104414
vendor-advisory
https://github.com/TryGhost/Ghost/security/advisories/GHSA-v3xr-g6p2-fvgv
third-party-advisory
https://www.vulncheck.com/advisories/ghost-from-2.5.0-before-6.64.0-stored-xss-via-oembed-photo-responses
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