High severity · published Feb 10, 2026
CVE-2026-25611
Pre-Authentication Memory Exhaustion Denial of Service in MongoDB Server
7.5
CVSS
0.9%
EPSS
No
On KEV
Description
A series of specifically crafted, unauthenticated messages can exhaust available memory and crash a MongoDB server.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 58% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MS
MongoDB Server · MongoDB Inc
8.2 before 8.2.4; 8.0 before 8.0.18; 7.0 before 7.0.29 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-25611
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-25611
jira.mongodb.org
https://jira.mongodb.org/browse/SERVER-116206
jira.mongodb.org
https://jira.mongodb.org/browse/SERVER-116210
jira.mongodb.org
https://jira.mongodb.org/browse/SERVER-116211
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