CVE-2026-8199
Medium
Description
An authenticated user can cause excess memory usage via bitwise match expression AST processing of $bitsAllSet, $bitsAnySet, $bitsAllClear, and $bitsAnyClear. This contributes to memory pressure and may lead to availability loss by OOM. This issue impacts MongoDB Server v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Mongodb
PublishedMay 13, 2026
First seenMay 13, 2026
Weakness typeCWE-1325CWE-1325
How to fix
Update
- mongodb mongodb7.0.34, 8.0.23, 8.2.9, 8.3.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mongodb mongodb | 7.0.0 ≤ v < 7.0.34, 8.0.0 ≤ v < 8.0.23, 8.2.0 ≤ v < 8.2.9, 8.3.0 ≤ v < 8.3.2 | 7.0.34, 8.0.23, 8.2.9, 8.3.2 |
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