EUVD-2025-20195Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication mechanism validation
MITRE ATT&CK
2 techniques across 2 tactics: Defense Evasion, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
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Alert meAnalysisAIv1 – Jul 28, 2026
Missing authentication in the file upload API endpoint of SimStudioAI Sim allows remote unauthenticated attackers to upload arbitrary files. The vulnerability affects all versions up to commit 37786d371e17d35e0764e1b5cd519d873d90d97b. Public exploit code is available, though no active exploitation in the wild has been confirmed (not listed in CISA KEV).
Affected VersionsENISA
Affects your stack
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
5DescriptionCVE.org
A vulnerability was found in SimStudioAI sim up to 37786d371e17d35e0764e1b5cd519d873d90d97b. It has been declared as critical. Affected by this vulnerability is the function POST of the file apps/sim/app/api/files/upload/route.ts of the component Session Handler. The manipulation of the argument Request leads to missing authentication. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
SimStudio below 0.5.74 has a missing authorization on MongoDB tool endpoints that allows attackers to execute arbitrary
Improper authentication in Sim's CRON secret handler allows attackers to bypass authentication on internal APIs and CRON
A vulnerability classified as critical has been found in SimStudioAI sim up to 0.1.17. Affected is the function handleLo
A vulnerability was identified in SimStudioAI sim up to 1.0.0. Rated medium severity (CVSS 5.3), this vulnerability is r
SimStudio has a second authorization flaw in the OAuth token endpoint that allows privilege escalation through crafted t
Deployment authentication token weakness in SimStudioAI Sim up to 0.6.92 leaks a truncated SHA-256 derivative of the enc
A security vulnerability has been detected in SimStudioAI sim up to ed9b9ad83f1a7c61f4392787fb51837d34eeb0af. Rated medi
A weakness has been identified in SimStudioAI sim up to ed9b9ad83f1a7c61f4392787fb51837d34eeb0af. Rated medium severity
A vulnerability was found in SimStudioAI sim up to 51b1e97fa22c48d144aef75f8ca31a74ad2cfed2.ts. Rated medium severity (C
A vulnerability was determined in SimStudioAI sim up to 1.0.0. Rated medium severity (CVSS 5.3), this vulnerability is r
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