CVE-2026-105677
Received Received - Intake

Authenticated Remote Code Execution in Ghost CMS via Malicious Theme Translation

Publication date: 2026-10-05

Last updated on: 2026-10-05

Assigner: GitHub, Inc.

Description
Ghost is a Node.js content management system. From 6.10.3 until 6.64.0, a vulnerability in how Ghost loads theme translation files allowed an authenticated Administrator to execute arbitrary code on the server via a crafted theme. This issue is fixed in version 6.64.0.

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Meta Information

Published
2026-10-05
Last Modified
2026-10-05
Generated
2026-10-06
AI Q&A
2026-10-05
EPSS Evaluated
N/A
NVD
CVE-2026-105677
EUVD
EUVD-2026-92767

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
TryGhost Ghost >= 6.10.3, < 6.64.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
CWE-22 The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CWE-829 The product imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere.

Attack-Flow Graph

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Executive Summary

This vulnerability in Ghost CMS (versions 6.10.3 to 6.64.0) allows an authenticated Administrator to execute arbitrary code on the server by exploiting improper handling of theme translation files. The flaw enables path traversal and code injection attacks through crafted theme files.

Detection Guidance

To detect this vulnerability, check the installed Ghost CMS version. If it is between 6.10.3 and 6.64.0, the system is vulnerable. Run 'ghost version' in the terminal to verify the version. Additionally, inspect theme files for suspicious translation files or unexpected code execution patterns.

Impact Analysis

An attacker with administrative access could exploit this to gain remote code execution, potentially compromising the entire system. This could lead to data theft, unauthorized modifications, or service disruption. Self-hosted users are particularly at risk if they do not update to version 6.64.0 or later.

Compliance Impact

This vulnerability allows authenticated administrators to execute arbitrary code on the server, which could lead to unauthorized data access, modification, or deletion. Such a compromise may violate GDPR's data protection requirements (e.g., Article 32 on security of processing) and HIPAA's safeguards for protected health information (e.g., 45 CFR § 164.308(a)(1)(i)).

Mitigation Strategies

Update Ghost CMS to version 6.64.0 or later to patch the vulnerability. Use Docker or Ghost-CLI for self-hosted instances to apply the update.

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