CVE-2026-82052
Medium
Description
The $regexFindAll expression can be used by an authenticated user who can run aggregation pipeline stages to crash a MongoDB server (mongod). Under certain specific conditions the regex match can start in the middle of a multi-code-unit character, triggering an assertion during query execution.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Mongodb
PublishedSep 8, 2026
First seenSep 8, 2026
Weakness typeCWE-617CWE-617
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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