Missing Authorization in rdiffweb

{
  "id": "560e726b1a141c184f220ba0685a8b77197f7f7431e9844badb3c5f7ef665b21",
  "url": "https://osv.dev/vulnerability/CVE-2026-109119",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Missing Authorization in rdiffweb",
    "summary": "Improper Privilege Management in the user management API endpoint (/api/users/{username_or_id}) in Rdiffweb allows authenticated users to elevate their privileges to administrator by modifying the role parameter in a POST request.",
    "evidence": "osv:CVE-2026-109119",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-109119",
      "aliases": [
        "CVE-2026-109119"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/ikus-soft/rdiffweb",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "b529adf2c13a210d10aaf56325de4d3fb2428abe"
                },
                {
                  "fixed": "4ce35fc2d23ac1cc789186f32bf76603b2eddeb3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.10.6"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "b529adf2c13a210d10aaf56325de4d3fb2428abe"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "4ce35fc2d23ac1cc789186f32bf76603b2eddeb3"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.10.5",
            "2.10.4",
            "2.9.5",
            "2.9.4",
            "2.9.3",
            "2.9.2",
            "2.9.1",
            "2.8.9",
            "2.8.8",
            "2.8.7",
            "2.8.6",
            "2.8.5",
            "2.8.4",
            "2.8.3",
            "2.8.2",
            "2.8.1",
            "2.8.0",
            "2.7.1",
            "2.7.0",
            "2.6.1",
            "2.6.0",
            "2.5.6",
            "2.5.5",
            "2.5.4",
            "2.5.3",
            "2.5.2",
            "2.5.1",
            "2.5.0",
            "2.4.0",
            "2.3.9",
            "2.3.8",
            "2.3.7",
            "2.3.6",
            "2.3.4",
            "2.3.3",
            "2.3.2",
            "2.3.1",
            "2.3.0",
            "2.2.1",
            "2.1.0",
            "2.0.2",
            "2.0.1",
            "2.0.0",
            "1.5.0",
            "1.4.0",
            "1.3.2",
            "1.3.1",
            "1.3.0",
            "1.2.2",
            "1.2.1",
            "1.2.0",
            "1.1.0",
            "1.0.3",
            "1.0.2",
            "1.0.1",
            "1.0.0",
            "0.10.9",
            "0.10.8",
            "0.10.7",
            "0.10.6",
            "0.10.5",
            "0.10.4",
            "0.10.2",
            "0.10.0",
            "0.9.5",
            "0.9.3",
            "0.9.2",
            "0.9.1",
            "0.8.1",
            "v0.7.0",
            "0.7.0",
            "v0.6.5",
            "v0.6.4"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109119.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.165800556Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109119.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-109119",
        "https://gitlab.com/ikus-soft/rdiffweb/-/commit/4ce35fc2d23ac1cc789186f32bf76603b2eddeb3",
        "https://gitlab.com/ikus-soft/rdiffweb/-/commit/b529adf2c13a210d10aaf56325de4d3fb2428abe",
        "https://gitlab.com/ikus-soft/rdiffweb"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-862"
        ],
        "cna_assigner": "GitLab",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109119.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-109119",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 489713,
  "published_at": "2026-10-16T10:27:28.149+00:00"
}