{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "wger"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-27835"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-639"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-26T22:13:13Z",
    "nvd_published_at": "2026-02-26T22:20:49Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\n\n`RepetitionsConfigViewSet` and `MaxRepetitionsConfigViewSet` return all users\u0027 repetition config data because their `get_queryset()` calls `.all()` instead of filtering by the authenticated user. Any registered user can enumerate every other user\u0027s workout structure.\n\n### Details\n\n`wger/manager/api/views.py:499` and `:518`:\n\n```python\n# VULNERABLE\nclass RepetitionsConfigViewSet(viewsets.ModelViewSet):\n    def get_queryset(self):\n        return RepetitionsConfig.objects.all()\n\nclass MaxRepetitionsConfigViewSet(viewsets.ModelViewSet):\n    def get_queryset(self):\n        return MaxRepetitionsConfig.objects.all()\n```\n\nEvery sibling viewset in the same file correctly filters by user. For example, `WeightConfigViewSet` at line 459:\n\n```python\n# CORRECT \u2014 how it should work\ndef get_queryset(self):\n    return WeightConfig.objects.filter(\n        slot_entry__slot__day__routine__user=self.request.user\n    )\n```\n\nThe same user filter is present on `SetsConfig`, `RestConfig`, `RiRConfig`, and their Max variants \u2014 only `RepetitionsConfig` and `MaxRepetitionsConfig` are missing it.\n\n### PoC\n\n```python\nimport requests\n\nBASE = \"http://localhost\"\nheaders = {\"Authorization\": \"Token YOUR_TOKEN\"}  # any registered user\n\nr = requests.get(f\"{BASE}/api/v2/repetitions-config/\", headers=headers)\nprint(r.json())  # returns ALL users\u0027 repetition configs, not just your own\n\nr = requests.get(f\"{BASE}/api/v2/max-repetitions-config/\", headers=headers)\nprint(r.json())  # same \u2014 all users\u0027 max repetition configs\n```\n\nRegistration is open by default. Sequential IDs allow full enumeration.\n\n### Impact\n\nAny authenticated user can read other users\u0027 repetition and max-repetitions configs, exposing workout structure (slot entry IDs, iteration values, operations, step counts, repeat flags, requirements JSON). This is a broken object-level authorization (BOLA/IDOR) vulnerability \u2014 the same class of issue as OWASP API1.\n\n**Fix**: Add the same user filter used by every other config viewset:\n```python\ndef get_queryset(self):\n    return RepetitionsConfig.objects.filter(\n        slot_entry__slot__day__routine__user=self.request.user\n    )\n```",
  "id": "GHSA-xf68-8hjw-7mpm",
  "modified": "2026-02-27T21:59:25Z",
  "published": "2026-02-26T22:13:13Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/wger-project/wger/security/advisories/GHSA-xf68-8hjw-7mpm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27835"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wger-project/wger/commit/1fda5690b35706bb137850c8a084ec6a13317b64"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/wger-project/wger"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "wger: IDOR in RepetitionsConfig and MaxRepetitionsConfig API leak other users\u0027 workout data"
}

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "wger is a free, open-source workout and fitness manager. In versions up to and including 2.4, `RepetitionsConfigViewSet` and `MaxRepetitionsConfigViewSet` return all users\u0027 repetition config data because their `get_queryset()` calls `.all()` instead of filtering by the authenticated user. Any registered user can enumerate every other user\u0027s workout structure. Commit 1fda5690b35706bb137850c8a084ec6a13317b64 contains a fix for the issue."
    },
    {
      "lang": "es",
      "value": "wger es un gestor de entrenamientos y fitness gratuito y de c\u00f3digo abierto. En versiones hasta la 2.4 inclusive, \u0027RepetitionsConfigViewSet\u0027 y \u0027MaxRepetitionsConfigViewSet\u0027 devuelven los datos de configuraci\u00f3n de repeticiones de todos los usuarios porque su \u0027get_queryset()\u0027 llama a \u0027.all()\u0027 en lugar de filtrar por el usuario autenticado. Cualquier usuario registrado puede enumerar la estructura de entrenamiento de cualquier otro usuario. El commit 1fda5690b35706bb137850c8a084ec6a13317b64 contiene una soluci\u00f3n para el problema."
    }
  ],
  "id": "CVE-2026-27835",
  "lastModified": "2026-02-27T14:06:37.987",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-02-26T22:20:49.333",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/wger-project/wger/commit/1fda5690b35706bb137850c8a084ec6a13317b64"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/wger-project/wger/security/advisories/GHSA-xf68-8hjw-7mpm"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}