CVE-2026-50152

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Source
https://cve.org/CVERecord?id=CVE-2026-50152
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50152.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-50152
Aliases
  • GHSA-rg9p-5xcp-wm8h
Downstream
Published
2026-08-27T20:53:42.353Z
Modified
2026-08-30T03:30:44.204514653Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L CVSS Calculator
Summary
Ceph Monitor subscription handler improperly authorizes config-key store reads, exposing cluster secrets to read-only users
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

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50152.json",
    "cwe_ids": [
        "CWE-285"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/ceph/ceph

Affected ranges

Type
GIT
Repo
https://github.com/ceph/ceph
Events
Introduced
1680e466aab77cdf9ba07394bea664106580b32b
Introduced
048fc68c517f50b9978457f478ca4638f01caa09
Fixed
f9fd95b4335bad6a26d7a74468f55d269e8dbef4
Fixed
7f793731f1b39eb4f465e960113d2363c311b964
Fixed
d971bb2b6199f70b1708a20a63fa944ee7a94727
Fixed
f2840d2fd338ab5de2865f0f78684bbf7b888c84
Database specific
Show details 
{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "19.0.0"
        },
        {
            "fixed": "19.2.6"
        },
        {
            "introduced": "20.0.0"
        },
        {
            "fixed": "20.2.4"
        }
    ]
}

Affected versions

v19.*
v19.0.0
v19.2.5
v20.*
v20.0.0
v20.2.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50152.json"