BotSharp through 5.2.0 contains an authentication bypass vulnerability that allows unauthenticated remote attackers to forge bearer tokens using the hard-coded Jwt:Key in WebStarter appsettings.json. Attackers can sign tokens with the committed HMAC secret and fixed botsharp issuer and audience to impersonate any known user, including administrators, on Authorize-protected API routes.
History

Thu, 15 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 08:15:00 +0000

Type Values Removed Values Added
First Time appeared Scisharp
Scisharp botsharp
Vendors & Products Scisharp
Scisharp botsharp

Sun, 11 Oct 2026 13:45:00 +0000

Type Values Removed Values Added
Description BotSharp through 5.2.0 contains an authentication bypass vulnerability that allows unauthenticated remote attackers to forge bearer tokens using the hard-coded Jwt:Key in WebStarter appsettings.json. Attackers can sign tokens with the committed HMAC secret and fixed botsharp issuer and audience to impersonate any known user, including administrators, on Authorize-protected API routes.
Title BotSharp through 5.2.0 Authentication Bypass via Hard-Coded JWT Signing Key
Weaknesses CWE-321
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 9.3, '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-11T13:26:07.369Z

Updated: 2026-10-14T16:47:26.986Z

Reserved: 2026-10-11T13:12:04.527Z

Link: CVE-2026-108860

cve-icon Vulnrichment

Updated: 2026-10-14T16:47:22.588Z

cve-icon NVD

Status : Deferred

Published: 2026-10-11T14:17:05.933

Modified: 2026-10-16T19:18:44.867

Link: CVE-2026-108860

cve-icon Redhat

No data.