{"schema":"threatline.record/2","record":{"id":"CVE-2026-108860","aliases":[],"summary":"BotSharp through 5.2.0 Authentication Bypass via Hard-Coded JWT Signing Key","details":"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.","categories":["Unclassified"],"product":"BotSharp","vendor":"SciSharp","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-108860","source_modified_at":"2026-10-14T16:47:26.986Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"BotSharp","vendor":"SciSharp","versions":[{"version":"0","status":"affected","lessThanOrEqual":"5.2.0","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":9.3,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.00476,"percentile":0.40214,"score_date":"2026-10-23"},"published_at":"2026-10-11T13:26:07.369Z","modified_at":"2026-10-14T16:47:26.986Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-108860","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-14T16:47:26.986Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-108860","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/scisharp-botsharp-public-jwt-signing-key","tags":["third-party-advisory"]},{"source":"CVE List","url":"https://github.com/SciSharp/BotSharp/blob/a11ee0317cab5c619df1cb5d0c4fc39d1b6e30b4/src/WebStarter/appsettings.json#L16-L20","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/SciSharp/BotSharp/blob/a11ee0317cab5c619df1cb5d0c4fc39d1b6e30b4/src/Infrastructure/BotSharp.OpenAPI/BotSharpOpenApiExtensions.cs#L46-L57","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/SciSharp/BotSharp","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/botsharp-through-5.2.0-authentication-bypass-via-hard-coded-jwt-signing-key","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"total","assessed_at":"2026-10-14T16:47:16.407934Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-14T16:47:26.986Z","content_hash":"a72773ecb1724d5197f3d2d677b3aa1b0bf62a65fe6dedcdbd9e0566911153a7"}}