1. Home
  2. CVE Database
  3. CVE-2026-3431
CRITICAL · 9.8

CVE-2026-3431

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 endp...

Vulnerability 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.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
SimSim< 0.5.74

Related Weaknesses (CWE)

CWE-862

References

FAQ

What is CVE-2026-3431?

CVE-2026-3431 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 endp...

How severe is CVE-2026-3431?

CVE-2026-3431 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-3431?

Check the references section above for vendor advisories and patch information. Affected products include: Sim Sim.