CVE-2026-3431
Critical
Description
On SimStudio version below to 0.5.74, the MongoDB tool endpoints accept arbitrary connection parameters from the caller without authentication or host restrictions. An attacker can leverage these endpoints to connect to any reachable MongoDB instance and perform unauthorized operations including reading, modifying, and deleting data.
SeverityCritical
CVSS9.8
Exploit probability—
ProductSim
PublishedMar 2, 2026
First seenMar 2, 2026
Weakness typeCWE-862Missing authorization
How to fix
Update
- sim sim0.5.74 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sim sim | v < 0.5.74 | 0.5.74 |
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