CVE-2026-50152 (GCVE-0-2026-50152)
Vulnerability from cvelistv5
Published
2026-08-27 20:53
Modified
2026-08-28 15:06
Severity ?
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
CWE
Summary
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
References
Impacted products
Vendor Product Version
ceph ceph Version: >= 19.0.0, < 19.2.6
Version: >= 20.0.0, < 20.2.4
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