Node.js CVE-2026-29053
HIGH
GHSA-cgc2-rcrh-qr5x
Severity by source
AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionGitHub Advisory
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.
AnalysisAI
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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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Attacker must have high-privilege admin/theme-developer credentials in Ghost 0.7.2–6.19.0. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 7.6 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker could exploit this vulnerability to compromise the affected system. |
| Remediation | Fixed in version 6.19.1.. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify and inventory all Ghost CMS deployments and their versions; disable theme upload functionality or restrict to administrative users only. …
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