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Vulnerability record · CVE-2026-3432 · published 2 March 2026

CVE-2026-3432: Sim missing authorization vulnerability

Sim · Sim

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.

9.3 CVSS 4.0 Critical EPSS 0.45% · top 63.6% CWE-862 · Missing authorization
9.3CVSS 4.0 base score
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

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.

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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.tenable.com/security/research/tra-2026-13 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-3431Sim missing authorization vulnerabilityOn SimStudio version below to 0.5.74, the MongoDB tool endpoints accept arbitrary connection parameters from the caller without authentication or hos…EPSS 0.61%5.5CVE-2025-15099Sim improper authentication vulnerabilityA vulnerability was identified in simstudioai sim up to 0.5.27. This vulnerability affects unknown code of the file apps/sim/lib/auth/internal.ts of …EPSS 0.79%5.5CVE-2025-7114Sim improper authentication vulnerabilityA vulnerability was found in SimStudioAI sim up to 37786d371e17d35e0764e1b5cd519d873d90d97b. It has been declared as critical. Affected by this vulne…EPSS 0.52%5.5CVE-2025-7107Sim path traversal vulnerabilityA vulnerability classified as critical has been found in SimStudioAI sim up to 0.1.17. Affected is the function handleLocalFile of the file apps/sim/…EPSS 0.79%5.3CVE-2025-10097Sim injection vulnerabilityA vulnerability was identified in SimStudioAI sim up to 1.0.0. This impacts an unknown function of the file apps/sim/app/api/function/execute/route.t…EPSS 0.76%2.1CVE-2025-10096Sim server-side request forgery (ssrf) vulnerabilityA vulnerability was determined in SimStudioAI sim up to 1.0.0. This affects an unknown function of the file apps/sim/app/api/files/parse/route.ts. Ex…EPSS 0.28%2.1CVE-2025-9805Sim server-side request forgery (ssrf) vulnerabilityA vulnerability was found in SimStudioAI sim up to 51b1e97fa22c48d144aef75f8ca31a74ad2cfed2. This issue affects some unknown processing of the file a…EPSS 0.29%2.1CVE-2025-9800Sim improper access control vulnerabilityA weakness has been identified in SimStudioAI sim up to ed9b9ad83f1a7c61f4392787fb51837d34eeb0af. Affected by this issue is the function Import of th…EPSS 0.32%

Source: NIST National Vulnerability Database (record CVE-2026-3432), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.