Open WebUI: SSRF into internal services via unvalidated sub-resource requests in the Playwright web loader

{
  "id": "c4851837db31dfb0598fcee0ad7d57c6f5aa80dc37064b5dbc03edec36ed72b1",
  "url": "https://osv.dev/vulnerability/CVE-2026-70479",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Open WebUI: SSRF into internal services via unvalidated sub-resource requests in the Playwright web loader",
    "summary": "Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, with WEB_LOADER_ENGINE=playwright, the Playwright web loader validates only the top-level page request and lets sub-resource requests pass unvalidated. A page supplied by an authenticated user can use JavaScript to reach blocked internal addresses, and returned DOM can include data read from those addresses in web-search or RAG output. This issue is fixed in 0.11.0.",
    "evidence": "osv:CVE-2026-70479",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-70479",
      "aliases": [
        "CVE-2026-70479",
        "GHSA-w2rx-84hp-gg95",
        "PYSEC-2026-3653"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/open-webui/open-webui",
              "type": "GIT",
              "events": [
                {
                  "introduced": "1a97751e376e00a1897bc3679215ae1c7bd8fd42"
                },
                {
                  "fixed": "f9590b8017199e56d5e953657e6498e3cef1d246"
                },
                {
                  "fixed": "bef63a2ae915571d50d2722a635e8bfa753d7877"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.9.6"
                      },
                      {
                        "fixed": "0.11.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "bef63a2ae915571d50d2722a635e8bfa753d7877"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "f9590b8017199e56d5e953657e6498e3cef1d246"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v0.11.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.9.6"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70479.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:34.077452010Z",
      "provider": "osv",
      "references": [
        "https://github.com/open-webui/open-webui/releases/tag/v0.11.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70479.json",
        "https://github.com/open-webui/open-webui/security/advisories/GHSA-w2rx-84hp-gg95",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-70479",
        "https://github.com/open-webui/open-webui/commit/bef63a2ae915571d50d2722a635e8bfa753d7877",
        "https://github.com/open-webui/open-webui/pull/27526"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-918"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70479.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-70479",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 501331,
  "published_at": "2026-08-04T19:40:12.035+00:00"
}