{"id":"CVE-2026-103396","published":"2026-09-30T15:22:28.093","lastModified":"2026-09-30T17:32:07.107","description":"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.","cvssScore":4.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","cwes":["CWE-863"],"vendors":[],"products":[],"references":[{"url":"https://github.com/mlogclub/bbs-go","tags":[]},{"url":"https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/handlers/admin/user_handlers.go#L47-L59","tags":[]},{"url":"https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/permissions/admin_permission_registry.go#L59-L60","tags":[]},{"url":"https://github.com/mlogclub/bbs-go/commit/97d0bb3dcbacd686fd5300295afbf4f4a5da7609","tags":[]},{"url":"https://github.com/mlogclub/bbs-go/issues/303","tags":[]},{"url":"https://www.vulncheck.com/advisories/bbs-go-through-4.4.6-incorrect-authorization-via-api-admin-user-synccount","tags":[]}],"exploitRefs":[{"url":"https://github.com/mlogclub/bbs-go","tags":[]},{"url":"https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/handlers/admin/user_handlers.go#L47-L59","tags":[]},{"url":"https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/permissions/admin_permission_registry.go#L59-L60","tags":[]},{"url":"https://github.com/mlogclub/bbs-go/commit/97d0bb3dcbacd686fd5300295afbf4f4a5da7609","tags":[]},{"url":"https://github.com/mlogclub/bbs-go/issues/303","tags":[]}],"hasPoc":true,"ai":null}