CVE-2026-105679

Ghost is a Node.js content management system. From 6.22.1 until 6.64.0, Ghost restricted the content type used to serve uploaded files to prevent browsers from executing them. On sites using the default local storage adapter, this restriction was not applied, so files uploaded by any staff user were served with a content type derived from their file extension. This could be used to host scripts on the site's domain, possibly resulting in compromise of other staff users' admin sessions. This issue is fixed in version 6.64.0.

• CWE-79
• CWE-434

• https://github.com/TryGhost/Ghost/commit/58669d5c8b898f8b69c1287c2779b29ecc7eb918
• https://github.com/TryGhost/Ghost/pull/30762
• https://github.com/TryGhost/Ghost/releases/tag/v6.64.0
• https://github.com/TryGhost/Ghost/security/advisories/GHSA-gfjp-2p8f-94qv

Published

Oct 5, 2026

Last Modified

Oct 6, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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