CVE-2026-103396
mediumbbs-go through 4.4.6 contains a permission bypass vulnerability in the AdminMiddleware authorization logic where the read-only dashboard.user.view permission r…
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/mlogclub/bbs-go disclosure@vulncheck.com
- https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/handlers/admin/user_handlers.go#L4... disclosure@vulncheck.com
- https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/permissions/admin_permission_regis... disclosure@vulncheck.com
- https://github.com/mlogclub/bbs-go/commit/97d0bb3dcbacd686fd5300295afbf4f4a5da7609 disclosure@vulncheck.com
- https://github.com/mlogclub/bbs-go/issues/303 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/bbs-go-through-4.4.6-incorrect-authorization-via-api-... disclosure@vulncheck.com