Improper Authentication in MongoDB Intra-Cluster Connections Allows Credential Exposure (MongoDB MongoDB Server)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.36 % · percentile 29 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- mongodb
- NVD status
- Analyzed
Description
An issue in MongoDB Server's intra-cluster connection setup could allow a party with suitable network access to influence which authentication mechanism is used when one replica set member connects to another. Under certain conditions, this could cause the cluster's shared internal credential to be transmitted in a less-protected form, potentially allowing that credential to be recovered. If recovered, the credential could be used to authenticate as the internal superuser to nodes in the deployment.
Weaknesses (CWE)
- CWE-757 — Selection of Less-Secure Algorithm During Negotiation
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 4.0 | CRITICAL 9.0 | CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | mongodb |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | mongodb |
| CVSS 4.0 | CRITICAL 9.0 | CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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 · cna@mongodb.com (Secondary) |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · cna@mongodb.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-56921
- GCVE · GCVE-0-2026-18691
Affected configurations (NVD CPE)
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*≥ 7.0.0 < 7.0.40cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*≥ 8.0.0 < 8.0.29cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*≥ 8.2.0 ≤ 8.2.12cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*≥ 8.3.0 < 8.3.8cpe:2.3:a:mongodb:mongodb:9.0.0:alpha0:*:*:-:-:*:*cpe:2.3:a:mongodb:mongodb:9.0.0:alpha1:*:*:-:-:*:*cpe:2.3:a:mongodb:mongodb:9.1.0:alpha0:*:*:-:-:*:*
Affected products
| Product | Versions |
|---|---|
| MongoDB · MongoDB Server | affected 8.3.0 < 8.3.8 ; affected 8.0 < 8.0.29 ; affected 7.0 < 7.0.40 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |