{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "last_affected": "0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandaloneSingleVersion"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0"
            }
          ],
          "repo": "https://github.com/grocy/grocy",
          "type": "GIT"
        }
      ],
      "versions": [
        "0"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "TuranSec",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71236.json"
  },
  "details": "Grocy's API request-body parser (controllers/Api/BaseApiController.php, GetParsedAndFilteredRequestBody) purifies incoming field values with HTMLPurifier, then manually reverses HTML-entity encoding of the resulting output by replacing \u0026amp;lt;, \u0026amp;gt;, and \u0026amp;amp; back to \u003c, \u003e, and \u0026 immediately after purification.",
  "id": "CVE-2026-71236",
  "modified": "2026-10-21T02:31:10.361275341Z",
  "published": "2026-08-05T10:56:28.138Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71236.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/grocy/grocy"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-71236"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Grocy - Stored XSS via HTMLPurifier Output Double-Decode"
}