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NoteGen chat preview XSS via unsanitized AI/skill HTML rendering

Type: advisorySources: OSV

NoteGen before 0.32.0 renders AI chat responses with markdown-it configured with html:true and injects the result into the DOM via dangerouslySetInnerHTML in chat-preview, without HTML sanitization and with CSP set to null. Attacker-controlled content that reaches the model prompt (for example a malicious skill REFERENCE.md that instructs the model to emit HTML) can cause the model response to include executable markup such as an img onerror handler. When the user views the chat response, that markup runs as JavaScript in the privileged Tauri webview, enabling arbitrary script execution in the application context (cross-site scripting).

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-17496
Confirmed fixed CVEs
Not specified
Updated in this feed
7 Nov 2026, 01:48 UTC · Revision 1

Source evidence

NoteGen chat preview XSS via unsanitized AI/skill HTML rendering

core-osv · Original source

Published 26 Jul 2026, 14:33 UTC

NoteGen before 0.32.0 renders AI chat responses with markdown-it configured with html:true and injects the result into the DOM via dangerouslySetInnerHTML in chat-preview, without HTML sanitization and with CSP set to null. Attacker-controlled content that reaches the model prompt (for example a malicious skill REFERENCE.md that instructs the model to emit HTML) can cause the model response to include executable markup such as an img onerror handler. When the user views the chat response, that markup runs as JavaScript in the privileged Tauri webview, enabling arbitrary script execution in the application context (cross-site scripting).

osv:CVE-2026-17496
Complete source record
{
  "id": "8dffff4892d60e287ef641f84e4a1e6ad45ff74f9a96b64e7508377fd3185214",
  "url": "https://osv.dev/vulnerability/CVE-2026-17496",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "NoteGen chat preview XSS via unsanitized AI/skill HTML rendering",
    "summary": "NoteGen before 0.32.0 renders AI chat responses with markdown-it configured with html:true and injects the result into the DOM via dangerouslySetInnerHTML in chat-preview, without HTML sanitization and with CSP set to null. Attacker-controlled content that reaches the model prompt (for example a malicious skill REFERENCE.md that instructs the model to emit HTML) can cause the model response to include executable markup such as an img onerror handler. When the user views the chat response, that markup runs as JavaScript in the privileged Tauri webview, enabling arbitrary script execution in the application context (cross-site scripting).",
    "evidence": "osv:CVE-2026-17496",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-17496",
      "aliases": [
        "CVE-2026-17496"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "git://github.com/codexu/note-gen",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "8a40efd90a9089dfaa6cacdd245504cce821b1d8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.32.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            },
            {
              "repo": "https://github.com/codexu/note-gen",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "8a40efd90a9089dfaa6cacdd245504cce821b1d8"
                },
                {
                  "fixed": "ae3ba948c41d8a74b4a20f4c6f26fcdda2002298"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:notegen:notegen:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.32.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "ae3ba948c41d8a74b4a20f4c6f26fcdda2002298"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "8a40efd90a9089dfaa6cacdd245504cce821b1d8"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "note-gen-v0.32.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "note-gen-v0.31.2",
            "note-gen-v0.31.1",
            "note-gen-v0.31.0",
            "note-gen-v0.30.1",
            "note-gen-v0.30.0",
            "note-gen-v0.29.2",
            "note-gen-v0.29.1",
            "note-gen-v0.29.0",
            "note-gen-v0.28.0",
            "note-gen-v0.27.9",
            "note-gen-v0.27.8",
            "note-gen-v0.27.7",
            "note-gen-v0.27.6",
            "note-gen-v0.27.5",
            "note-gen-v0.27.4",
            "note-gen-v0.27.3",
            "note-gen-v0.27.2",
            "note-gen-v0.27.1",
            "note-gen-v0.27.0",
            "note-gen-v0.26.5",
            "note-gen-v0.26.4",
            "note-gen-v0.26.3",
            "note-gen-v0.26.2",
            "note-gen-v0.26.1",
            "note-gen-v0.26.0",
            "note-gen-v0.25.4",
            "note-gen-v0.25.3",
            "note-gen-v0.25.2",
            "note-gen-v0.25.1",
            "note-gen-v0.25.0",
            "note-gen-v0.24.1",
            "note-gen-v0.24.0",
            "note-gen-v0.23.7",
            "note-gen-v0.23.6",
            "note-gen-v0.23.5",
            "note-gen-v0.23.4",
            "note-gen-v0.23.3",
            "note-gen-v0.23.2",
            "note-gen-v0.23.1",
            "note-gen-v0.23.0",
            "note-gen-v0.22.4",
            "note-gen-v0.22.3",
            "note-gen-v0.22.2",
            "note-gen-v0.22.1",
            "note-gen-v0.22.0",
            "note-gen-v0.21.3",
            "note-gen-v0.21.2",
            "note-gen-v0.21.1",
            "note-gen-v0.21.0",
            "note-gen-v0.20.3",
            "note-gen-v0.20.2",
            "note-gen-v0.20.1",
            "note-gen-v0.20.0",
            "note-gen-v0.19.11",
            "note-gen-v0.19.10",
            "note-gen-v0.19.9",
            "note-gen-v0.19.8",
            "note-gen-v0.19.7",
            "note-gen-v0.19.6",
            "note-gen-v0.19.5",
            "note-gen-v0.19.4",
            "note-gen-v0.19.3",
            "note-gen-v0.17.3",
            "note-gen-v0.17.2",
            "note-gen-v0.17.1",
            "note-gen-v0.17.0",
            "note-gen-v0.16.5",
            "note-gen-v0.16.4",
            "note-gen-v0.16.3",
            "note-gen-v0.16.2",
            "app-v0.16.1",
            "app-v0.16.0",
            "app-v0.15.0",
            "app-v0.14.0",
            "app-v0.13.7",
            "app-v0.13.6",
            "app-v0.13.5",
            "app-v0.13.4",
            "app-v0.13.3",
            "app-v0.13.2",
            "app-v0.13.1",
            "app-v0.13.0",
            "app-v0.12.4",
            "app-v0.12.3",
            "app-v0.12.2",
            "app-v0.12.1",
            "app-v0.12.0",
            "app-v0.11.0",
            "app-v0.10.8",
            "app-v0.10.7",
            "app-v0.10.6",
            "app-v0.10.5",
            "app-v0.10.4",
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            "app-v0.10.2",
            "app-v0.10.1",
            "app-v0.10.0",
            "app-v0.9.1",
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            "app-v0.8.0",
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            "app-v0.7.8",
            "app-v0.7.7",
            "app-v0.7.6",
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            "app-v0.6.1",
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            "app-v0.5.19",
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            "app-v0.5.17",
            "app-v0.5.11",
            "app-v0.5.10",
            "app-v0.5.9",
            "app-v0.5.8",
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            "app-v0.2.1",
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-17496.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.678139463Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/17xxx/CVE-2026-17496.json",
        "https://github.com/codexu/note-gen/releases/tag/note-gen-v0.32.0",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-17496",
        "https://github.com/codexu/note-gen/commit/ae3ba948c41d8a74b4a20f4c6f26fcdda2002298",
        "https://github.com/codexu/note-gen"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "JFROG",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/17xxx/CVE-2026-17496.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-17496",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 517105,
  "published_at": "2026-07-26T14:33:02.602+00:00"
}