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
CVE-2026-50152
“—” beside the score: it is equal to the CVSS score beside it.
This critical-severity CVE scores 9.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (14th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 9.1
- EG Score
- 9.1CRITICALmedium confidence
- EG Risk
- 41EG Risk 41/100
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computed (value × EchelonGraph’s weight)Severity91% × 45%The EG Score, 9.1 of 10.Exploitation0.2% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.2%
- EPSS %ILE
- 14th
- KEV
- Not listed
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
August 27, 2026
Last Modified
September 8, 2026
Advisory Details (3)
Auto-updated Sep 15, 2026MON config-key store improper authorization · Advisory · ceph/ceph · GitHub
https://github.com/ceph/ceph/security/advisories/GHSA-rg9p-5xcp-wm8hcommit f2840d2fd338 (ceph/ceph)
Fix landed in ceph/ceph commit f2840d2fd338 — awaiting tagged release
https://github.com/ceph/ceph/commit/f2840d2fd338ab5de2865f0f78684bbf7b888c84commit d971bb2b6199 (ceph/ceph)
Fix landed in ceph/ceph commit d971bb2b6199 — awaiting tagged release
https://github.com/ceph/ceph/commit/d971bb2b6199f70b1708a20a63fa944ee7a94727Vendor Advisories for CVE-2026-50152(2)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(1)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| redhat | rhceph/rhceph-8-rhel9:1791176990 | 2026-10-08 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(3 across 3 ecosystems)
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| ceph | 16.2.11+ds-2 ... 20.2.4+ds-1 (63 versions) |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| ceph | 18.2.7+ds-1 ... 20.2.4+ds-1 (20 versions) |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| ceph | 18.2.7+ds-1 ... 20.2.2+ds-9 (18 versions) |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 23× in last 7d / 62× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
- 2026-10-14 09:04 UTCEG score recompute
- 2026-10-14 09:04 UTCVendor advisory
- 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-13 05:50 UTCEG score recompute
- 2026-10-13 05:50 UTCVendor advisory
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-12 15:59 UTCEG score recompute
- 2026-10-12 07:17 UTCVendor advisory
- 2026-10-11 19:42 UTCEG score recompute
- 2026-10-11 16:57 UTCEG score recompute
- 2026-10-11 14:21 UTCEG score recompute
- 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-10 13:46 UTCVendor advisory
- 2026-10-10 09:44 UTCVendor advisory
- 2026-10-10 05:37 UTCVendor advisory
- 2026-10-10 01:45 UTCEG score recompute
- 2026-10-10 01:45 UTCVendor advisory
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-09 02:55 UTCEG score recompute
- 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-08 01:13 UTCEG score recompute
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-06 18:48 UTCEG score recompute
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 14th percentile
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- 2026-10-05 20:35 UTCEG score recompute
- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-05 01:23 UTCEG score recompute
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-03 14:56 UTCEG score recompute
- 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-02 21:35 UTCEG score recompute
- 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-01 19:52 UTCEG score recompute
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-09-30 19:53 UTCEG score recompute
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-09-30 04:53 UTCEG score recompute
- 2026-09-29 01:19 UTCEG score recompute
- 2026-09-28 15:57 UTCEG score recompute
- 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-09-27 17:23 UTCEG score recompute
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-09-26 18:22 UTCEG score recompute
- 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-09-24 15:24 UTCEG score recompute
- 2026-09-23 20:34 UTCEG score recompute
- 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-22 18:22 UTCEG score recompute
- 2026-09-21 22:41 UTCEG score recompute
- 2026-09-20 23:53 UTCEG score recompute
- 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-19 16:15 UTCEG score recompute
- 2026-09-18 21:29 UTCEG score recompute
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-17 20:54 UTCEG score recompute
- 2026-09-16 19:03 UTCEG score recompute
- 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-16 09:15 UTCEG score recompute
- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-15 06:08 UTCEG score recompute
- 2026-09-13 19:07 UTCEG score recompute
- 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-12 16:53 UTCEG score recompute
- 2026-09-11 18:22 UTCEG score recompute
- 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-11 10:52 UTCEG score recompute
- 2026-09-10 11:52 UTCEG score recompute
- 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-09 01:40 UTCEG score recompute
- 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-07 19:23 UTCEG score recompute
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-06 16:51 UTCEG score recompute
- 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-05 18:18 UTCEG score recompute
- 2026-09-04 15:03 UTCEG score recompute
- 2026-09-04 07:28 UTCEG score recompute
- 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-02 15:01 UTCEG score recompute
- 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-01 15:58 UTCEG score recompute
- 2026-09-01 15:03 UTCEG score recompute
- 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-01 08:24 UTCEG score recompute
- 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-01 04:39 UTCEG score recompute
- 2026-09-01 04:04 UTCEG score recompute
- 2026-08-30 21:07 UTCEG score recompute
- 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-08-30 02:17 UTCEG score recompute
- 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-08-28 23:53 UTCEG score recompute
- 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-08-28 16:39 UTCEG score recompute
- 2026-08-28 15:41 UTCEG score recompute
- 2026-08-28 00:31 UTCEG score recompute
- 2026-08-27 23:23 UTCEG score recomputeFirst assessed: 9.1 CRITICAL
- 2026-08-27 23:22 UTCMITRE cvelistV5first tracked
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownDebian:12:ceph
Same vendor
4 shownredhat:RHSA-2026:79243
Frequently asked(5)
What is CVE-2026-50152?
When was the CVE record for CVE-2026-50152 published?
Is CVE-2026-50152 actively exploited?
What is the CVSS score of CVE-2026-50152?
How do I remediate CVE-2026-50152?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-50152
Is Your Infrastructure Affected by CVE-2026-50152?
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