CVE-2026-1847

published 2026-02-10

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…

Priority P3 36 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

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.

Affected

5 ranges

Vendor	Product	Version range	Fixed in
mongodb	mongodb	>= 7.0.0 < 7.0.29	7.0.29
mongodb	mongodb	>= 8.0.0 < 8.0.18	8.0.18
mongodb	mongodb	>= 8.2.0 < 8.2.4	8.2.4
mongodb_inc	mongodb_server	>= 7.0 < 7.0.29	7.0.29
mongodb_inc	mongodb_server	>= 8.0 < 8.0.18	8.0.18

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd v4.0 7.1 HIGH CVSS:4.0/AV:N/AC:L/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

osv 7.1 HIGH

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.

CWE-770