Replication Stall in MongoDB Due to Large Document Insertion
CVE-2026-1847

7.1HIGH

Key Information:

Vendor

MongoDB
Status
Mongodb Server
Vendor
CVE Published:
10 February 2026

What is CVE-2026-1847?

Inserting oversized documents into MongoDB replica sets can hinder secondaries from retrieving the oplog from the primary. This behavior can lead to stalled replication processes, which may ultimately result in server crashes and compromised data integrity. Organizations using affected versions of MongoDB should take precautions to monitor document sizes and review their replica set configurations to mitigate potential disruptions.

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Affected Version(s)

MongoDB Server 8.0 < 8.0.18

MongoDB Server 7.0 < 7.0.29

References

https://jira.mongodb.org/browse/SERVER-113532

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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