by Kastro
Paper/Archive/CVE-2026-3431

CVE-2026-3431

SimStudioAI sim — Sim Studio AI - MongoDB SSRF and Arbitrary Document Deletion

EPSS 0.4%CVSS 9.8
critical.is priorityof 100
36
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 34.3.343 × 206.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
sim< 0.5.740.5.74CNA

Scores by source

tenable (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

reftenable.com/security/research/tra-2026-12