9

CVE-2026-18691

Improper Authentication in MongoDB Intra-Cluster Connections Allows Credential Exposure

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
MongoDB ≫ MongoDB Version >= 7.0.0 < 7.0.40
MongoDB ≫ MongoDB Version >= 8.0.0 < 8.0.29
MongoDB ≫ MongoDB Version >= 8.2.0 <= 8.2.12
MongoDB ≫ MongoDB Version >= 8.3.0 < 8.3.8
MongoDB ≫ MongoDB Version 9.0.0 Update alpha0 SwEdition - SwPlatform -
MongoDB ≫ MongoDB Version 9.0.0 Update alpha1 SwEdition - SwPlatform -
MongoDB ≫ MongoDB Version 9.1.0 Update alpha0 SwEdition - SwPlatform -
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.141
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
MongoDb 9 0 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
MongoDb 8.8 2.8 5.9
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-757 Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')

A protocol or its implementation supports interaction between multiple actors and allows those actors to negotiate which algorithm should be used as a protection mechanism such as encryption or authentication, but it does not select the strongest algorithm that is available to both parties.

https://jira.mongodb.org/browse/SERVER-130264
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