CVE-2026-53948
- Source
- https://cve.org/CVERecord?id=CVE-2026-53948
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53948.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-53948
- Aliases
- Published
- 2026-06-24T18:06:30Z
- Modified
- 2026-10-28T02:31:03Z
- Severity
-
- 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
- Summary
- Ghost: File Upload Content-Type Spoofing
- Details
-
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.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-434" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53948.json" }- References
Affected packages
Git / github.com/tryghost/ghost
Affected ranges
- Type
- GIT
- Repo
- https://github.com/tryghost/ghost
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "6.19.4" }, { "fixed": "6.21.1" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "introduced": "0" }, { "fixed": "6.21.1" } ], "source": "DESCRIPTION" } ] }