Arbitrary File Upload Affecting ghost package, versions >=6.22.1 <6.64.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published24 Oct 2026
- disclosed7 Oct 2026
- creditevertrustai, Enis Atılgan, Doan Manh Duc, HARSHIT GUPTA, 5255fgh
Introduced: 7 Oct 2026
NewCVE-2026-104411 (opens in a new tab)How to fix?
Upgrade ghost to version 6.64.0 or higher.
Overview
ghost is a publishing platform
Affected versions of this package are vulnerable to Arbitrary File Upload via incorrect Content-Type headers served by LocalFilesStorage for user-uploaded files. The local file storage adapter allows express.static to derive content types from file extensions, meaning uploaded files such as .html or .svg are served with browser-executable MIME types (e.g. text/html, image/svg+xml) rather than inert types. An authenticated attacker can upload a file containing malicious script content and then trick a victim into visiting the served URL, causing the browser to execute the script in the context of the Ghost origin.