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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-3431

34
FAUCET Score

CVE-2026-3431 is a critical vulnerability affecting SimStudio versions below 0.5.74, where unauthenticated MongoDB tool endpoints allow arbitrary connection parameters. This enables attackers to connect to any reachable MongoDB instance and perform unauthorized data operations, including reading, modifying, and deleting. With a CVSS score of 9.8 (CRITICAL), this vulnerability is easily exploitable over the network without authentication, leading to complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code, the vulnerability has garnered some community discussion, indicating awareness.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.5.74CPE matchmatch criteria
cpe:2.3:a:sim:sim:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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 Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 6th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (6)

3cxvendor investigatingvia llm_extracted
burp_suitevendor investigatingvia llm_extracted
entrustvendor investigatingvia llm_extracted
moxavendor investigatingvia llm_extracted
proxmoxvendor investigatingvia llm_extracted
qwikvendor investigatingvia llm_extracted

Vendor Advisories (6)

proxmoxllm-proxmox-9b4b0ff1651572d0CRITICAL

Sim Studio AI - MongoDB SSRF and Arbitrary Document Deletion

Mar 2, 2026
moxallm-moxa-3182eb3d707a83b3CRITICAL

Sim Studio AI - MongoDB SSRF and Arbitrary Document Deletion

Mar 2, 2026
entrustllm-entrust-7a421c971123074aCRITICAL

Sim Studio AI - MongoDB SSRF and Arbitrary Document Deletion

Mar 2, 2026
3cxllm-3cx-daa92802d8034d1aCRITICAL

Sim Studio AI - MongoDB SSRF and Arbitrary Document Deletion

Mar 2, 2026
burp_suitellm-burp_suite-e1344c9c8345d707CRITICAL

Sim Studio AI - MongoDB SSRF and Arbitrary Document Deletion

Mar 2, 2026
qwikllm-qwik-a8f442c53d28c743CRITICAL

Sim Studio AI - MongoDB SSRF and Arbitrary Document Deletion

Mar 2, 2026

References

tenable.com / security/research/tra-2026-12
Third Party Advisory