Medium severity · published Aug 5, 2026
CVE-2026-70595
Ghost: Server-Side Request Forgery Mitigation Issue
4.0
CVSS
0.3%
EPSS
No
On KEV
Description
Ghost is a Node.js content management system. From 6.26.0 until 6.54.1, a validation issue allowed some functionality, such as Webmentions, to be abused by an unauthenticated user to make limited HTTP requests to hosts in the Ghost server's internal network. A successful attack would not result in any response data being returned. This vulnerability is fixed in 6.54.1.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Changed
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
>= 6.26.0, < 6.54.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-70595
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-70595
github.com
https://github.com/TryGhost/Ghost/security/advisories/GHSA-x5mm-wm4g-j5xv
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