Medium severity · published May 18, 2026
CVE-2026-8843
Calling createIndex with certain index types can crash mongod
6.5
CVSS
0.2%
EPSS
No
On KEV
Description
Creating a "2dsphere_bucket" index on a non-timeseries bucket collection will succeed, but any subsequent attempt to insert a document which triggers updating that index will crash the server. A similar issue occurs when creating "queryable_encrypted_range" indices.
This issue affects MongoDB Server v7.0 versions prior to 7.0.32, v8.0 versions prior to 8.0.21 and v8.2 versions prior to 8.2.6
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)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
MongoDB · MongoDB
7.0.0 before 7.0.32; 8.0.0 before 8.0.21; 8.2.0 before 8.2.6 · source: NVD
MS
MongoDB Server · MongoDB, Inc.
7.0 before 7.0.32; 8.0 before 8.0.21; 8.2 before 8.2.6 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-8843
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-8843
Vendor Advisory
https://jira.mongodb.org/browse/SERVER-116327
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