{"id":"UBUNTU-CVE-2026-50152","details":"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","modified":"2026-09-02T19:40:48.169018583Z","published":"2026-08-28T00:18:00Z","upstream":["CVE-2026-50152"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-50152"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-50152"},{"type":"REPORT","url":"https://github.com/ceph/ceph/security/advisories/GHSA-rg9p-5xcp-wm8h"},{"type":"REPORT","url":"https://docs.ceph.com/en/latest/security/CVE-2026-50152/"}],"affected":[{"package":{"name":"ceph","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/ceph?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.67.4-0ubuntu2","0.67.4-0ubuntu3","0.72-0ubuntu1","0.72.1-0ubuntu1","0.72.1-2","0.72.1-3","0.72.2-1","0.72.2-2","0.78-0ubuntu1","0.79-0ubuntu1","0.80.1-0ubuntu1","0.80.1-0ubuntu1.1","0.80.5-0ubuntu0.14.04.1","0.80.7-0ubuntu0.14.04.1","0.80.9-0ubuntu0.14.04.1","0.80.9-0ubuntu0.14.04.2","0.80.10-0ubuntu0.14.04.1","0.80.10-0ubuntu1.14.04.2","0.80.10-0ubuntu1.14.04.3","0.80.11-0ubuntu1.14.04.1","0.80.11-0ubuntu1.14.04.2","0.80.11-0ubuntu1.14.04.3","0.80.11-0ubuntu1.14.04.4","0.80.11-0ubuntu1.14.04.4+esm2","0.80.11-0ubuntu1.14.04.4+esm3","0.80.11-0ubuntu1.14.04.4+esm4"],"ecosystem_specific":{"binaries":[{"binary_name":"ceph","binary_version":"0.80.11-0ubuntu1.14.04.4+esm4"},{"binary_version":"0.80.11-0ubuntu1.14.04.4+esm4","binary_name":"ceph-common"},{"binary_version":"0.80.11-0ubuntu1.14.04.4+esm4","binary_name":"ceph-fs-common"},{"binary_name":"ceph-fuse","binary_version":"0.80.11-0ubuntu1.14.04.4+esm4"},{"binary_name":"ceph-mds","binary_version":"0.80.11-0ubuntu1.14.04.4+esm4"},{"binary_name":"ceph-resource-agents","binary_version":"0.80.11-0ubuntu1.14.04.4+esm4"},{"binary_version":"0.80.11-0ubuntu1.14.04.4+esm4","binary_name":"ceph-test"},{"binary_name":"libcephfs-java","binary_version":"0.80.11-0ubuntu1.14.04.4+esm4"},{"binary_name":"libcephfs-jni","binary_version":"0.80.11-0ubuntu1.14.04.4+esm4"},{"binary_name":"libcephfs1","binary_version":"0.80.11-0ubuntu1.14.04.4+esm4"},{"binary_version":"0.80.11-0ubuntu1.14.04.4+esm4","binary_name":"librados2"},{"binary_name":"librbd1","binary_version":"0.80.11-0ubuntu1.14.04.4+esm4"},{"binary_name":"python-ceph","binary_version":"0.80.11-0ubuntu1.14.04.4+esm4"},{"binary_version":"0.80.11-0ubuntu1.14.04.4+esm4","binary_name":"radosgw"},{"binary_name":"rbd-fuse","binary_version":"0.80.11-0ubuntu1.14.04.4+esm4"},{"binary_version":"0.80.11-0ubuntu1.14.04.4+esm4","binary_name":"rest-bench"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50152.json"}},{"package":{"name":"ceph","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/ceph?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.94.3-0ubuntu2","0.94.5-0ubuntu1","9.2.0-0ubuntu3","9.2.0-0ubuntu4","9.2.0-0ubuntu5","9.2.0-0ubuntu6","10.0.2-0ubuntu1","10.0.3-0ubuntu1","10.0.5-0ubuntu1","10.1.0-0ubuntu1","10.1.1-0ubuntu1","10.1.2-0ubuntu1","10.2.0-0ubuntu0.16.04.1","10.2.0-0ubuntu0.16.04.2","10.2.2-0ubuntu0.16.04.2","10.2.3-0ubuntu0.16.04.2","10.2.5-0ubuntu0.16.04.1","10.2.6-0ubuntu0.16.04.1","10.2.7-0ubuntu0.16.04.1","10.2.9-0ubuntu0.16.04.1","10.2.10-0ubuntu0.16.04.1","10.2.11-0ubuntu0.16.04.1","10.2.11-0ubuntu0.16.04.2","10.2.11-0ubuntu0.16.04.3","10.2.11-0ubuntu0.16.04.3+esm1","10.2.11-0ubuntu0.16.04.3+esm2","10.2.11-0ubuntu0.16.04.3+esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"ceph","binary_version":"10.2.11-0ubuntu0.16.04.3+esm3"},{"binary_name":"ceph-common","binary_version":"10.2.11-0ubuntu0.16.04.3+esm3"},{"binary_name":"ceph-fs-common","binary_version":"10.2.11-0ubuntu0.16.04.3+esm3"},{"binary_name":"ceph-fuse","binary_version":"10.2.11-0ubuntu0.16.04.3+esm3"},{"binary_name":"ceph-mds","binary_version":"10.2.11-0ubuntu0.16.04.3+esm3"},{"binary_name":"ceph-resource-agents","binary_version":"10.2.11-0ubuntu0.16.04.3+esm3"},{"binary_name":"ceph-test","binary_version":"10.2.11-0ubuntu0.16.04.3+esm3"},{"binary_name":"libcephfs-java","binary_version":"10.2.11-0ubuntu0.16.04.3+esm3"},{"binary_name":"libcephfs-jni","binary_version":"10.2.11-0ubuntu0.16.04.3+esm3"},{"binary_name":"libcephfs1","binary_version":"10.2.11-0ubuntu0.16.04.3+esm3"},{"binary_name":"librados2","binary_version":"10.2.11-0ubuntu0.16.04.3+esm3"},{"binary_name":"libradosstriper1","binary_version":"10.2.11-0ubuntu0.16.04.3+esm3"},{"binary_name":"librbd1","binary_version":"10.2.11-0ubuntu0.16.04.3+esm3"},{"binary_version":"10.2.11-0ubuntu0.16.04.3+esm3","binary_name":"librgw2"},{"binary_version":"10.2.11-0ubuntu0.16.04.3+esm3","binary_name":"python-ceph"},{"binary_version":"10.2.11-0ubuntu0.16.04.3+esm3","binary_name":"python-cephfs"},{"binary_name":"python-rados","binary_version":"10.2.11-0ubuntu0.16.04.3+esm3"},{"binary_name":"python-rbd","binary_version":"10.2.11-0ubuntu0.16.04.3+esm3"},{"binary_version":"10.2.11-0ubuntu0.16.04.3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