CVE-2026-103396

Medium

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.

SeverityMedium

CVSS4.3

Exploit probability—

ProductMlogclub Bbs-go

PublishedSep 30, 2026

First seenSep 30, 2026

Weakness typeCWE-863Incorrect authorization

How to fix

Patches

github.com/mlogclub/bbs-go/commit/97d0bb3dcbacd686fd5300295afbf4f4a5da7609

Affected products

Product	Affected versions	Fixed in
mlogclub bbs-go	v ≤ 4.4.6	—

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