CVE-2026-103396
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.
- Published Sep 30, 2026
- CVSS 5.3 medium
- 0.3% chance of exploitation in the next 30 days (EPSS)
- A fix is available