CVE-2026-108860 BotSharp - Authentication Bypass

BotSharp through 5.2.0 contains an authentication bypass caused by hard-coded Jwt:Key in WebStarter appsettings.json, letting unauthenticated remote attackers forge bearer tokens to impersonate any user including administrators, exploit requires knowledge of the hard-coded key.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
EPSS
0.48% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
11 October 2026
Updated
15 October 2026
Weakness
CWE-321

Vendor fix

Update to the latest version that removes hard-coded Jwt:Key or rotate the Jwt:Key to a secure secret.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs