wger: Stored XSS via Unescaped License Attribution Fields

{
  "id": "b0855fe090796f7b268d7044052c895d6672dbe5de18c79bf0eaac70dd33e058",
  "url": "https://osv.dev/vulnerability/CVE-2026-40353",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wger: Stored XSS via Unescaped License Attribution Fields",
    "summary": "wger is a free, open-source workout and fitness manager. In versions 2.5 and below, the attribution_link property in AbstractLicenseModel constructs HTML by directly interpolating user-controlled license fields (such as license_author) without escaping, and templates render the result using Django's |safe filter. An authenticated user can create an ingredient with a malicious license_author value containing JavaScript, which executes in the browser of any visitor viewing the ingredient page, resulting in stored XSS. This issue has been fixed in version 2.5.",
    "evidence": "osv:CVE-2026-40353",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-40353",
      "aliases": [
        "CVE-2026-40353",
        "GHSA-6f54-qjvm-wwq3",
        "PYSEC-2026-3419"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/wger-project/wger",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "c1fca6bdf77d8ed80048d1b73a8da80cf36ee751"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.5"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "c1fca6bdf77d8ed80048d1b73a8da80cf36ee751"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "2.5"
                  },
                  {
                    "cpe": "cpe:2.3:a:wger:wger:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "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-2026-40353.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:41.425530382Z",
      "provider": "osv",
      "references": [
        "https://github.com/wger-project/wger/releases/tag/2.5",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40353.json",
        "https://github.com/wger-project/wger/security/advisories/GHSA-6f54-qjvm-wwq3",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-40353"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40353.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-40353",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 509024,
  "published_at": "2026-04-17T21:16:12.401+00:00"
}