Post-auth queries on compound index may crash mongod
Published Nov 23, 2020
6.5
MEDIUMCVSS 3.1
EPSS 1.48%
Description
A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries with compound indexes affecting QueryPlanner. This issue affects MongoDB Server v3.6 versions prior to 3.6.9 and MongoDB Server v4.0 versions prior to 4.0.3.
Affected products
-
- Version 3.6StatusaffectedConstraints<3.6.9
- Version 4.0StatusaffectedConstraints<4.0.3
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MongoDB Inc. | MongoDB Server | unaffected |
|
No data.
Red Hat Advanced Cluster Management for Kubernetes 2
mongodb
Not affected
Red Hat OpenStack Platform 10 (Newton)
mongodb
Out of support scope
Red Hat Software Collections
rh-mongodb36-mongodb
Will not fix
Red Hat Update Infrastructure 3 for Cloud Providers
mongodb
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Advanced Cluster Management for Kubernetes 2 | mongodb | Not affected | n/a |
| Red Hat OpenStack Platform 10 (Newton) | mongodb | Out of support scope | n/a |
| Red Hat Software Collections | rh-mongodb36-mongodb | Will not fix | n/a |
| Red Hat Update Infrastructure 3 for Cloud Providers | mongodb | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.48% (0.01480) | 72.97th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.48% (0.01480) | 72.76th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.07% (0.00068) | 30.26th | v3 (v2023.03.01) |
| Jun 12, 2024 | 0.07% (0.00068) | 29.71th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00068) | 27.70th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.52% (0.00518) | 11.68th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.52% (0.00518) | 0.00th | v1 |
References (5)
- https://access.redhat.com/security/cve/CVE-2018-20802 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1900847 Issue Tracking
- https://jira.mongodb.org/browse/SERVER-36993 x_refsource_CONFIRMIssue TrackingVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-20802
- https://www.cve.org/CVERecord?id=CVE-2018-20802
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2018-20802 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1900847 | Issue Tracking | |
| https://jira.mongodb.org/browse/SERVER-36993 | x_refsource_CONFIRMIssue TrackingVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-20802 | ||
| https://www.cve.org/CVERecord?id=CVE-2018-20802 |
Change history (0)
No recorded changes yet.