{"schema":"threatline.record/2","record":{"id":"CVE-2026-103396","aliases":[],"summary":"bbs-go through 4.4.6 Incorrect Authorization via /api/admin/user/synccount","details":"bbs-go through 4.4.6 contains a permission bypass vulnerability in the AdminMiddleware authorization logic where the read-only dashboard.user.view permission rule matches the /api/admin/user/synccount endpoint before the intended dashboard.user.update rule. Authenticated users with only view permissions can call the synccount endpoint to trigger expensive full-table user recounts and cache invalidations, causing denial of service through repeated concurrent database operations.","categories":["Unclassified"],"product":"bbs-go","vendor":"mlogclub","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103396","source_modified_at":"2026-09-30T16:57:55.383Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"bbs-go","vendor":"mlogclub","versions":[{"version":"0","status":"affected","versionType":"semver","lessThanOrEqual":"4.4.6"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":5.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00286,"percentile":0.20031,"score_date":"2026-10-23"},"published_at":"2026-09-30T14:48:56.405Z","modified_at":"2026-09-30T16:57:55.383Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-103396","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-30T16:57:55.383Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-103396","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/mlogclub/bbs-go/issues/303","tags":["issue-tracking"]},{"source":"CVE List","url":"https://github.com/mlogclub/bbs-go/commit/97d0bb3dcbacd686fd5300295afbf4f4a5da7609","tags":["patch"]},{"source":"CVE List","url":"https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/permissions/admin_permission_registry.go#L59-L60","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/handlers/admin/user_handlers.go#L47-L59","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/mlogclub/bbs-go","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/bbs-go-through-4.4.6-incorrect-authorization-via-api-admin-user-synccount","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":"no","technical_impact":"partial","assessed_at":"2026-09-30T16:57:45.943159Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-09-30T16:57:55.383Z","content_hash":"fc0dbfb904675b4ef803368cc20f8546e4b0d9f882ee72fd4e890f7493c4b78d"}}