CVE-2026-29053
HIGH
GHSA-cgc2-rcrh-qr5x
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
Lifecycle Timeline
3Description
Ghost is a Node.js content management system. From version 0.7.2 to 6.19.0, specifically crafted malicious themes can execute arbitrary code on the server running Ghost. This issue has been patched in version 6.19.1.
Analysis
Arbitrary code execution in Ghost CMS versions 0.7.2 through 6.19.0 allows authenticated attackers with theme upload privileges to execute malicious code on the server by crafting specially designed theme files. The vulnerability affects Ghost installations running on Node.js and requires high privileges to exploit, though successful attacks compromise complete server integrity with confidentiality, integrity, and availability impact. …
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Remediation
Within 24 hours: Identify and inventory all Ghost CMS deployments and their versions; disable theme upload functionality or restrict to administrative users only. Within 7 days: Implement compensating controls (network segmentation, WAF rules blocking suspicious theme uploads); escalate with Ghost vendor for patch timeline. …
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External POC / Exploit Code
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