CVE-2026-82066
Medium
Description
A heap out-of-bounds read security issue exists in the query planning component of MongoDB Server. An authenticated user with database read and write privileges can trigger the security issue through crafted query operations, causing the server to read memory beyond allocated buffer boundaries. The revealed memory contents may be partially observable through diagnostic query statistics output.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Mongodb
PublishedSep 8, 2026
First seenSep 8, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- mongodb mongodb7.0.41, 8.0.30, 8.3.9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mongodb mongodb | 7.0.0 ≤ v < 7.0.41, 8.0.0 ≤ v < 8.0.30, 8.3.0 ≤ v < 8.3.9 | 7.0.41, 8.0.30, 8.3.9 |
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