What is CVE-2026-1847?

CVE-2026-1847 is a medium-severity vulnerability in Mongodb, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-02-10.

How severe is CVE-2026-1847?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Mongodb

CVE-2026-1847

Inserting certain large documents into a replica set could lead to replica set secondaries not being able to fetch the oplog from the primary. This could stall replication inside the replica set leading to server crash.

EPSS: 0.002 (15.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Mongodb
Mongodb Inc Server — versions 8.0, 7.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

cna@mongodb.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-1847?: CVE-2026-1847 is a medium-severity vulnerability in Mongodb, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-02-10.
How severe is CVE-2026-1847?: Medium severity. CVSS v3 base score is 6.5 out of 10.