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Critical

Roxy-WI: IDOR on PUT /smon/check — any user can rewrite any tenant's monitoring URL/IP/body

Type: advisorySources: OSV

Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. In versions 8.2.6.4 and prior, PUT /smon/check (app/routes/smon/routes.py:117-138) gates only on roxywi_common.check_user_group_for_flask() — which validates that the caller has some group, not that the target check_id belongs to it. The downstream SQL update functions update_smon, update_smonHttp, update_smonTcp, update_smonPing, update_smonDns (app/modules/db/smon.py:515-562) all execute WHERE smon_id = ? with no user_group filter. The DELETE path is correctly filtered (app/modules/db/smon.py:319-327 does WHERE id = ? AND user_group = ?), demonstrating that the maintainers know the right pattern but did not apply it on UPDATE. Therefore any authenticated user can iterate over smon_id values and silently rewrite any other tenant's HTTP / TCP / Ping / DNS monitoring check. At time of publication, there are no publicly available patches.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-45550
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 19:03 UTC · Revision 1

Source evidence

Roxy-WI: IDOR on PUT /smon/check — any user can rewrite any tenant's monitoring URL/IP/body

core-osv · Original source

Published 10 Jun 2026, 14:00 UTC

Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. In versions 8.2.6.4 and prior, PUT /smon/check (app/routes/smon/routes.py:117-138) gates only on roxywi_common.check_user_group_for_flask() — which validates that the caller has some group, not that the target check_id belongs to it. The downstream SQL update functions update_smon, update_smonHttp, update_smonTcp, update_smonPing, update_smonDns (app/modules/db/smon.py:515-562) all execute WHERE smon_id = ? with no user_group filter. The DELETE path is correctly filtered (app/modules/db/smon.py:319-327 does WHERE id = ? AND user_group = ?), demonstrating that the maintainers know the right pattern but did not apply it on UPDATE. Therefore any authenticated user can iterate over smon_id values and silently rewrite any other tenant's HTTP / TCP / Ping / DNS monitoring check. At time of publication, there are no publicly available patches.

osv:CVE-2026-45550
Complete source record
{
  "id": "ce4859c0d014ee0699483cd29447848ded564b13560a6932501ba8858aa0b9d0",
  "url": "https://osv.dev/vulnerability/CVE-2026-45550",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Roxy-WI: IDOR on PUT /smon/check — any user can rewrite any tenant's monitoring URL/IP/body",
    "summary": "Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. In versions 8.2.6.4 and prior, PUT /smon/check (app/routes/smon/routes.py:117-138) gates only on roxywi_common.check_user_group_for_flask() — which validates that the caller has some group, not that the target check_id belongs to it. The downstream SQL update functions update_smon, update_smonHttp, update_smonTcp, update_smonPing, update_smonDns (app/modules/db/smon.py:515-562) all execute WHERE smon_id = ? with no user_group filter. The DELETE path is correctly filtered (app/modules/db/smon.py:319-327 does WHERE id = ? AND user_group = ?), demonstrating that the maintainers know the right pattern but did not apply it on UPDATE. Therefore any authenticated user can iterate over smon_id values and silently rewrite any other tenant's HTTP / TCP / Ping / DNS monitoring check. At time of publication, there are no publicly available patches.",
    "evidence": "osv:CVE-2026-45550",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-45550",
      "aliases": [
        "CVE-2026-45550",
        "GHSA-856h-mvm2-2h2x"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/roxy-wi/roxy-wi",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "d72ea494d0bf1ee220fe141625a4298600f624ad"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "8.2.6.4"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "8.2.6.4"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
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            "v8.2.6.3",
            "v8.2.8.2",
            "v8.2.8.1",
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45550.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.713407396Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45550.json",
        "https://github.com/roxy-wi/roxy-wi/security/advisories/GHSA-856h-mvm2-2h2x",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-45550"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-639",
          "CWE-862",
          "CWE-863"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45550.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-45550",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498583,
  "published_at": "2026-06-10T14:00:06.978+00:00"
}