Medium severity · published Aug 11, 2026
CVE-2026-18700
Use-After-Free in MongoDB Geospatial Validation Leads to Denial of Service
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
An issue in MongoDB Server's geospatial validation could allow an authenticated user with write privileges to cause an internal reference to be used after the underlying memory has been freed, through concurrent operations against a collection using a certain type of validator. This could result in a server crash, leading to a denial of service.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
MongoDB · MongoDB
8.3.0 before 8.3.8; 8.0 before 8.0.29; 7.0 before 7.0.40 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-18700
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-18700
Vendor Advisory
https://jira.mongodb.org/browse/SERVER-130117
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