Integer overflow in MongoDB
CVE-2026-82076
An integer overflow in the query planning component of MongoDB Server can allow an authenticated user with ordinary database-level read/write privileges to bypass an internal resource limit. Submitting a specially crafted query causes the server to consume memory without bound during query planning, and the resulting exhaustion terminates the server process. This may result in a denial of service affecting all databases served by the affected node.
Vulnerability class: Integer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.004 (34.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- MongoDB — versions 9.0.0
- MongoDB Server
Weakness classification (CWE)
References
- jira.mongodb.org/browse/SERVER-128253 (Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-82076?
- CVE-2026-82076 is a medium-severity vulnerability in MongoDB, classified under Integer Overflow or Wraparound. CVSS score: 6.5/10. Published 2026-09-08.
- How severe is CVE-2026-82076?
- Medium severity. CVSS v3 base score is 6.5 out of 10.