CVE-2026-3432
CRITICALSimStudio < 0.5.74 - Unauthenticated OAuth Token Theft via credentialAccountUserId and providerId Parameters
Title source: llmDescription
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.
References (1)
Core 1
Core References
Third Party Advisory
https://www.tenable.com/security/research/tra-2026-13
Scores
CVSS v3
9.1
EPSS
0.0030
EPSS Percentile
21.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-862
Status
published
Products (1)
sim/sim
< 0.5.74
Published
Mar 02, 2026
Tracked Since
Mar 02, 2026