{"id":"CVE-2026-50152","title":"Ceph is an open-source distributed storage platform providing object, block, and file storage","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, al…","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L","cwe":["CWE-285"],"published":"2026-08-28","updated":"2026-09-08","sourceUpdated":"2026-09-08T21:11:56.250","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-50152","references":[{"url":"https://github.com/ceph/ceph/commit/d971bb2b6199f70b1708a20a63fa944ee7a94727","label":"security-advisories@github.com"},{"url":"https://github.com/ceph/ceph/commit/f2840d2fd338ab5de2865f0f78684bbf7b888c84","label":"security-advisories@github.com"},{"url":"https://github.com/ceph/ceph/security/advisories/GHSA-rg9p-5xcp-wm8h","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00162,"epssPercentile":0.05862,"ingestedAt":"2026-09-08T22:12:30.941Z","slug":"CVE-2026-50152","body":"## Overview\n\nCeph 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\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}