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Vulnerability Details :

CVE-2026-3432

Summary
Assigner-tenable
Assigner Org ID-5ac1ecc2-367a-4d16-a0b2-35d495ddd0be
Published At-02 Mar, 2026 | 13:01
Updated At-02 Mar, 2026 | 13:32
Rejected At-
Credits

Sim Studio AI - Unauthenticated OAuth Token Theft

On SimStudio version below to 0.5.74, the `/api/auth/oauth/token` endpoint contains a code path that bypasses all authorization checks when provided with `credentialAccountUserId` and `providerId` parameters. An unauthenticated attacker can retrieve OAuth access tokens for any user by supplying their user ID and a provider name, effectively stealing credentials to third-party services.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:tenable
Assigner Org ID:5ac1ecc2-367a-4d16-a0b2-35d495ddd0be
Published At:02 Mar, 2026 | 13:01
Updated At:02 Mar, 2026 | 13:32
Rejected At:
▼CVE Numbering Authority (CNA)
Sim Studio AI - Unauthenticated OAuth Token Theft

On SimStudio version below to 0.5.74, the `/api/auth/oauth/token` endpoint contains a code path that bypasses all authorization checks when provided with `credentialAccountUserId` and `providerId` parameters. An unauthenticated attacker can retrieve OAuth access tokens for any user by supplying their user ID and a provider name, effectively stealing credentials to third-party services.

Affected Products
Vendor
SimStudioAI
Product
sim
Repo
https://github.com/simstudioai/sim
Default Status
unaffected
Versions
Affected
  • From 0 before 0.5.74 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-862CWE-862 Missing Authorization
Type: CWE
CWE ID: CWE-862
Description: CWE-862 Missing Authorization
Metrics
VersionBase scoreBase severityVector
4.09.3CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Version: 4.0
Base score: 9.3
Base severity: CRITICAL
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-665CAPEC-665 Exploitation of Thunderbolt Protection Flaws
CAPEC ID: CAPEC-665
Description: CAPEC-665 Exploitation of Thunderbolt Protection Flaws
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.tenable.com/security/research/tra-2026-13
N/A
Hyperlink: https://www.tenable.com/security/research/tra-2026-13
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:vulnreport@tenable.com
Published At:02 Mar, 2026 | 13:16
Updated At:02 Mar, 2026 | 20:29

On SimStudio version below to 0.5.74, the `/api/auth/oauth/token` endpoint contains a code path that bypasses all authorization checks when provided with `credentialAccountUserId` and `providerId` parameters. An unauthenticated attacker can retrieve OAuth access tokens for any user by supplying their user ID and a provider name, effectively stealing credentials to third-party services.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.09.3CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Secondary
Version: 4.0
Base score: 9.3
Base severity: CRITICAL
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-862Secondaryvulnreport@tenable.com
CWE ID: CWE-862
Type: Secondary
Source: vulnreport@tenable.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://www.tenable.com/security/research/tra-2026-13vulnreport@tenable.com
N/A
Hyperlink: https://www.tenable.com/security/research/tra-2026-13
Source: vulnreport@tenable.com
Resource: N/A

Change History

0
Information is not available yet

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