CVE-2026-108860
CRITICAL
CVSS 9.1
Published: 2026-10-11
Modified: 2026-10-11
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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.
Quick Facts
| CVE ID | CVE-2026-108860 |
| CVSS Score | 9.1 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| Published | 2026-10-11 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |