CVE-2026-53948: Ghost: File Upload Content-Type Spoofing
TryGhost · Ghost
Affected: TryGhost Ghost · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 13% of scored CVEs
DescriptionCVE.org
Ghost is a Node.js content management system. From 6.19.4 until 6.21.1, insufficient validation of the client-supplied Content-Type on Ghost's Admin API file upload endpoint allowed uploaded files to be served from the site with an attacker-chosen content type on S3/GCS storage backends. On installations that serve uploaded files from the same origin as the site, this could have been used to facilitate stored cross-site scripting against site visitors or staff. This vulnerability is fixed in 6.21.1.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- TryGhost · Ghost>= 6.19.4, < 6.21.1
On the Atlas
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-53948 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.