CVE-2020-27839: Red Hat Ceph

Medium severity, CVSS 5.4. EPSS: 2.4% chance of exploitation in the next 30 days.

A flaw was found in ceph-dashboard. The JSON Web Token (JWT) used for user authentication is stored by the frontend application in the browser’s localStorage which is potentially vulnerable to attackers via XSS attacks. The highest threat from this vulnerability is to data confidentiality and integrity.

Affected products

• Red Hat Ceph: before 14.2.17 (fixed in 14.2.17); from 15.2.0, before 15.2.9 (fixed in 15.2.9)

Published 2021-05-26. Last modified 2026-06-17.