{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "19.0.0"
              },
              {
                "fixed": "19.2.6"
              },
              {
                "introduced": "20.0.0"
              },
              {
                "fixed": "20.2.4"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "1680e466aab77cdf9ba07394bea664106580b32b"
            },
            {
              "introduced": "048fc68c517f50b9978457f478ca4638f01caa09"
            },
            {
              "fixed": "f9fd95b4335bad6a26d7a74468f55d269e8dbef4"
            },
            {
              "fixed": "7f793731f1b39eb4f465e960113d2363c311b964"
            },
            {
              "fixed": "d971bb2b6199f70b1708a20a63fa944ee7a94727"
            },
            {
              "fixed": "f2840d2fd338ab5de2865f0f78684bbf7b888c84"
            }
          ],
          "repo": "https://github.com/ceph/ceph",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-rg9p-5xcp-wm8h"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-285"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50152.json"
  },
  "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",
  "id": "CVE-2026-50152",
  "modified": "2026-08-30T03:30:44.204514653Z",
  "published": "2026-08-27T20:53:42.353Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50152.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/ceph/ceph/security/advisories/GHSA-rg9p-5xcp-wm8h"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50152"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ceph/ceph/commit/d971bb2b6199f70b1708a20a63fa944ee7a94727"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ceph/ceph/commit/f2840d2fd338ab5de2865f0f78684bbf7b888c84"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Ceph Monitor subscription handler improperly authorizes config-key store reads, exposing cluster secrets to read-only users"
}