Improper Authorization Affecting ceph package, versions *


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.25% (15th percentile)

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  • Snyk IDSNYK-UBUNTU2004-CEPH-19169680
  • published25 Sept 2026
  • disclosed28 Aug 2026

Introduced: 28 Aug 2026

CVE-2026-50152  (opens in a new tab)
CWE-285  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:20.04 ceph.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ceph package and not the ceph package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

Ceph is an open-source distributed storage platform providing object, block, and file storage. In versions prior to 20.2.4 and 19.2.6, the Monitor subscription handler fails to properly authorize access to the configuration-key store, allowing any CephX user with only  mon allow r capabilities to read the entire store by sending a single crafted MMonSubscribe message. The config-key store holds sensitive secrets including OSD LUKS disk-encryption passphrases and, on cephadm-managed clusters, the SSH private key that cephadm uses to reach every host in the cluster. Because that key grants root on every node under the default cephadm configuration, a low-privileged read-only account can escalate to full cluster and host compromise. This issue is fixed in versions 20.2.4 and 19.2.6

CVSS Base Scores

version 3.1