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CVE-2026-103396.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSMEDIUM / 5.3CVSS 4.0 · disclosure@vulncheck.com
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSDeferredModified Sep 30, 2026

Disclosure summary

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.

Source-reported weakness categories

CWE-863

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

NIST National Vulnerability Database · NVD-CVE-2026-103396

Open original source · Updated Sep 30, 2026

Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.

Original records & references

PUBLISHED 2026-09-30T11:22:28-04:00
MODIFIED 2026-09-30T13:32:07-04:00
INGESTED 2026-10-06T11:44:58-04:00