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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
mlogclub bbs-go unaffected
Version Status Constraints
0 affected ≤ 4.4.6

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Bbs-go Project Subscribe
Bbs-go Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/mlogclub/bbs-go cve-icon cve-icon
https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/handlers/admin/user_handlers.go#L47-L59 cve-icon cve-icon
https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/permissions/admin_permission_registry.go#L59-L60 cve-icon cve-icon
https://github.com/mlogclub/bbs-go/commit/97d0bb3dcbacd686fd5300295afbf4f4a5da7609 cve-icon cve-icon
https://github.com/mlogclub/bbs-go/issues/303 cve-icon cve-icon
https://www.vulncheck.com/advisories/bbs-go-through-4.4.6-incorrect-authorization-via-api-admin-user-synccount cve-icon cve-icon
History

Wed, 30 Sep 2026 15:00:00 +0000

Type Values Removed Values Added
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.
Title bbs-go through 4.4.6 Incorrect Authorization via /api/admin/user/synccount
First Time appeared Bbs-go Project
Bbs-go Project bbs-go
Weaknesses CWE-863
CPEs cpe:2.3:a:bbs-go_project:bbs-go:*:*:*:*:*:*:*:*
Vendors & Products Bbs-go Project
Bbs-go Project bbs-go
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-30T14:48:56.405Z

Reserved: 2026-09-30T14:28:17.453Z

Link: CVE-2026-103396

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-30T15:22:28.093

Modified: 2026-09-30T15:22:28.093

Link: CVE-2026-103396

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses