Open Notebook before 1.11.0 Server-Side Request Forgery via link-source

{
  "id": "4a089a1265ab8a9d04e82f8cc7269656209b217cf0396d6d021e0041caabc5da",
  "url": "https://osv.dev/vulnerability/CVE-2026-90769",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Open Notebook before 1.11.0 Server-Side Request Forgery via link-source",
    "summary": "Open Notebook before 1.11.0 fails to validate the URL parameter in POST /api/sources endpoint, allowing authenticated users to perform server-side requests to internal services. Attackers can supply arbitrary URLs to read cloud metadata, internal network services, and localhost-bound services through the application server's direct HTTP requests.",
    "evidence": "osv:CVE-2026-90769",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-90769",
      "aliases": [
        "CVE-2026-90769"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/lfnovo/open-notebook",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "d9ad3917df581f6af4f9564f29e62dbdcd77a0db"
                },
                {
                  "fixed": "9045ea50196927eac7de647bb5b7009349236fb4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.11.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "9045ea50196927eac7de647bb5b7009349236fb4"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.10.0",
            "v1.9.0",
            "v1.8.5",
            "v1.8.4",
            "v1.8.3",
            "v1.8.1",
            "v1.8.0",
            "v1.7.4",
            "v1.7.3",
            "v1.7.2",
            "v1.7.1",
            "v1.7.0",
            "v1.6.2",
            "v1.5.0",
            "v1.4.0",
            "v1.3.1",
            "v1.3.0",
            "v1.2.4",
            "v1.2.0",
            "v1.0.8",
            "v0.3.2",
            "v0.3.1",
            "v0.3.0",
            "v0.2.2",
            "v0.2.0",
            "v0.1.1",
            "v0.1.0",
            "v0.0.10",
            "v0.0.9",
            "v0.0.8",
            "v0.0.7",
            "v0.0.5",
            "v0.0.4",
            "v0.0.3",
            "v0.0.2",
            "v0.0.1-alpha"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90769.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:21.759926700Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90769.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-90769",
        "https://www.vulncheck.com/advisories/open-notebook-before-1.11.0-server-side-request-forgery-via-link-source",
        "https://github.com/lfnovo/open-notebook/issues/1284",
        "https://github.com/lfnovo/open-notebook/commit/9045ea50196927eac7de647bb5b7009349236fb4",
        "https://github.com/lfnovo/open-notebook",
        "https://github.com/lfnovo/open-notebook/blob/8889087e317177d7b6e286342ab34e0c9c01d43e/api/routers/sources.py"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-918"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90769.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-90769",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 487723,
  "published_at": "2026-09-13T10:45:40.937+00:00"
}