Vulnerability in MongoDB, Inc. MongoDB Server
CVE-2026-8843
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
EPSS: 0.002 (14.2th 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, Inc. Mongodb Server — versions 7.0, 8.0, 8.2
Weakness classification (CWE)
References
- cna@mongodb.com (issue-tracking)
Frequently asked questions
- What is CVE-2026-8843?
- CVE-2026-8843 is a medium-severity vulnerability in MongoDB, Inc. MongoDB Server, classified under Reachable Assertion. CVSS score: 6.5/10. Published 2026-05-18.
- How severe is CVE-2026-8843?
- Medium severity. CVSS v3 base score is 6.5 out of 10.