{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.4.6"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7745195925f2094d1f37a1d7bbf13837fa948898"
            },
            {
              "fixed": "97d0bb3dcbacd686fd5300295afbf4f4a5da7609"
            }
          ],
          "repo": "https://github.com/mlogclub/bbs-go",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103396.json"
  },
  "details": "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.",
  "id": "CVE-2026-103396",
  "modified": "2026-10-02T03:30:59.393701508Z",
  "published": "2026-09-30T14:48:56.405Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103396.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-103396"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/bbs-go-through-4.4.6-incorrect-authorization-via-api-admin-user-synccount"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/mlogclub/bbs-go/issues/303"
    },
    {
      "type": "FIX",
      "url": "https://github.com/mlogclub/bbs-go/commit/97d0bb3dcbacd686fd5300295afbf4f4a5da7609"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mlogclub/bbs-go"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/handlers/admin/user_handlers.go#L47-L59"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/permissions/admin_permission_registry.go#L59-L60"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "bbs-go through 4.4.6 Incorrect Authorization via /api/admin/user/synccount"
}