wger: IDOR in nutritional_values endpoints exposes private dietary data via direct ORM lookup

{
  "id": "c9d3c5c0c585a35ef55b9abfea32cbac22b1b9f6716fd03af6a5caa4db4229c9",
  "url": "https://osv.dev/vulnerability/CVE-2026-27839",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wger: IDOR in nutritional_values endpoints exposes private dietary data via direct ORM lookup",
    "summary": "wger is a free, open-source workout and fitness manager. In versions up to and including 2.4, three `nutritional_values` action endpoints fetch objects via `Model.objects.get(pk=pk)` — a raw ORM call that bypasses the user-scoped queryset. Any authenticated user can read another user's private nutrition plan data, including caloric intake and full macro breakdown, by supplying an arbitrary PK. Commit 29876a1954fe959e4b58ef070170e81703dab60e contains a fix for the issue.",
    "evidence": "osv:CVE-2026-27839",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-27839",
      "aliases": [
        "CVE-2026-27839",
        "GHSA-g8gc-6c4h-jg86",
        "PYSEC-2026-3422"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/wger-project/wger",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "29876a1954fe959e4b58ef070170e81703dab60e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:wger:wger:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "29876a1954fe959e4b58ef070170e81703dab60e"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.4",
            "2.3",
            "2.0",
            "1.9",
            "1.8",
            "1.7",
            "1.5",
            "1.4",
            "1.3",
            "1.2",
            "1.1",
            "1.0.3",
            "1.0.2",
            "1.0.1",
            "1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27839.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.975277422Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27839.json",
        "https://github.com/wger-project/wger/security/advisories/GHSA-g8gc-6c4h-jg86",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-27839",
        "https://github.com/wger-project/wger/commit/29876a1954fe959e4b58ef070170e81703dab60e"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-639"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27839.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-27839",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 518283,
  "published_at": "2026-02-26T22:07:43.64+00:00"
}