CVE-2026-5170 json
Users could trigger a crash of mongod primaries during promotion to sharded
published 2026-03-30 7 mo ago modified 2026-09-08 2 mo ago also BIT-mongodb-2026-5170 , EUVD-2026-17115
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 11%
- public exploits
- 0
- none known
Summary
A user with access to the cluster with a limited set of privilege actions can trigger a crash of a mongod process during the limited and unpredictable window when the cluster is being promoted from a replica set to a sharded cluster. This may cause a denial of service by taking down the primary of the replica set.
This issue affects MongoDB Server v8.2 versions prior to 8.2.2, MongoDB Server v8.0 versions between 8.0.18, MongoDB Server v7.0 versions between 7.0.31.
Patch / fix
- bitnami mongodb 7.0.31, 8.0.18, 8.2.2
- MongoDB MongoDB Server 7.0.31, 8.0.18, 8.2.2
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.0 | CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
| CNA | 4.0 | 6.0 | CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | mongodb | >=7.0.0, <7.0.31 >=8.0.0, <8.0.18 >=8.2.0, <8.2.2 |
7.0.31 8.0.18 8.2.2 |
Affected products
- MongoDB MongoDB Server
Classification
- Weakness
-
- CWE-617 Reachable Assertion
- Technology feeds
References
-
jira.mongodb.org
/browse/SERVER-101758
vendor-advisory, patch, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-5170
web
Sources
- CVE List CVE-2026-5170
- NVD CVE-2026-5170
- OSV BIT-mongodb-2026-5170
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