Frappe Framework 16.10.0 - Stored DOM XSS in Multiple Field Formatters

{
  "id": "6325b137c2d1fdd13c10b1e49ff9a16331776766aa6279587d30bfa2f8c32bf2",
  "url": "https://osv.dev/vulnerability/CVE-2026-3837",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Frappe Framework 16.10.0 - Stored DOM XSS in Multiple Field Formatters",
    "summary": "An authenticated attacker can persist crafted values in multiple field types and trigger client-side script execution when another user opens the affected document in Desk. The vulnerable formatter implementations interpolate stored values into raw HTML attributes and element content without escaping This issue affects Frappe: 16.10.0.",
    "evidence": "osv:CVE-2026-3837",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-3837",
      "aliases": [
        "CVE-2026-3837"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/frappe/frappe",
              "type": "GIT",
              "events": [
                {
                  "introduced": "82d3ca94c494bb0efbd0e8917b2e4e6522496d4b"
                },
                {
                  "last_affected": "82d3ca94c494bb0efbd0e8917b2e4e6522496d4b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "16.10.0"
                      },
                      {
                        "last_affected": "16.10.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "cpe": "cpe:2.3:a:frappe:frappe:16.10.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "16.10.0"
                      },
                      {
                        "last_affected": "16.10.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "16.10.0",
            "v16.10.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3837.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.708967130Z",
      "provider": "osv",
      "references": [
        "https://fluidattacks.com/es/advisories/sabina",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3837.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-3837",
        "https://github.com/frappe/frappe/pull/38796",
        "https://github.com/frappe/frappe"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "Fluid Attacks",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3837.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-3837",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 520298,
  "published_at": "2026-04-22T19:52:56.248+00:00"
}