CVE-2026-18692
High
Description
An issue in MongoDB Server's handling of timeseries bucket lifecycle could allow an authenticated user with write privileges to cause an internal reference to be used after the underlying memory has been freed. Subsequent operations could then result in a server crash or, potentially, execution of unintended code.
SeverityHigh
CVSS7.7
Exploit probability48. percentile0.6%
Product
Mongodb
PublishedAug 11, 2026
First seenAug 11, 2026
Weakness typeCWE-416Use after free
How to fix
Update
- mongodb mongodb8.0.29, 8.3.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mongodb mongodb | 8.0.0 ≤ v < 8.0.29, 8.2.0 ≤ v ≤ 8.2.12, 8.3.0 ≤ v < 8.3.8, 9.0.0, 9.1.0 | 8.0.29, 8.3.8 |
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