CVE-2026-17496 (GCVE-0-2026-17496)
Vulnerability from cvelistv5 – Published: 2026-07-26 14:33 – Updated: 2026-07-26 14:33
VLAI
EPSS
VEX
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).
Severity
8.1 (High)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/codexu/note-gen/commit/ae3ba94… | patch |
| https://github.com/codexu/note-gen/releases/tag/n… | vendor-advisory |
| https://github.com/codexu/note-gen | product |
Credits
{
"containers": {
"cna": {
"affected": [
{
"collectionURL": "https://github.com/codexu/note-gen",
"defaultStatus": "unaffected",
"packageName": "note-gen",
"product": "NoteGen",
"programFiles": [
"src/app/core/main/chat/chat-preview.tsx"
],
"repo": "git://github.com/codexu/note-gen",
"vendor": "codexu",
"versions": [
{
"lessThan": "0.32.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"configurations": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eAffects the NoteGen desktop application on a default installation. Exploitation requires user interaction to install or otherwise load attacker-influenced skill/content and to view a chat response that includes the malicious HTML. No non-default configuration is required; CSP is null in affected builds.\u003c/p\u003e"
}
],
"value": "Affects the NoteGen desktop application on a default installation. Exploitation requires user interaction to install or otherwise load attacker-influenced skill/content and to view a chat response that includes the malicious HTML. No non-default configuration is required; CSP is null in affected builds."
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Yuval Moravchick"
},
{
"lang": "en",
"type": "coordinator",
"value": "JFrog Security Research"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eNoteGen 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).\u003c/p\u003e"
}
],
"value": "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)."
}
],
"impacts": [
{
"capecId": "CAPEC-63",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-63 Cross-Site Scripting (XSS)"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-26T14:33:02.602Z",
"orgId": "48a46f29-ae42-4e1d-90dd-c1676c1e5e6d",
"shortName": "JFROG"
},
"references": [
{
"name": "Fix: chat rendering moved to Streamdown",
"tags": [
"patch"
],
"url": "https://github.com/codexu/note-gen/commit/ae3ba948c41d8a74b4a20f4c6f26fcdda2002298"
},
{
"name": "NoteGen v0.32.0 release",
"tags": [
"vendor-advisory"
],
"url": "https://github.com/codexu/note-gen/releases/tag/note-gen-v0.32.0"
},
{
"name": "NoteGen repository",
"tags": [
"product"
],
"url": "https://github.com/codexu/note-gen"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eUpgrade to NoteGen 0.32.0 or later. The fix replaces unsanitized markdown-it HTML injection in chat preview with Streamdown-based rendering that hardens/sanitizes untrusted HTML in model output.\u003c/p\u003e"
}
],
"value": "Upgrade to NoteGen 0.32.0 or later. The fix replaces unsanitized markdown-it HTML injection in chat preview with Streamdown-based rendering that hardens/sanitizes untrusted HTML in model output."
}
],
"source": {
"discovery": "EXTERNAL"
},
"timeline": [
{
"lang": "en",
"time": "2026-06-08T00:00:00.000Z",
"value": "Vulnerability discovered and PoC verified"
},
{
"lang": "en",
"time": "2026-07-20T00:00:00.000Z",
"value": "Fix released in NoteGen v0.32.0 (Streamdown chat rendering)"
}
],
"title": "NoteGen chat preview XSS via unsanitized AI/skill HTML rendering",
"x_generator": {
"engine": "Vulnogram 1.0.4"
}
}
},
"cveMetadata": {
"assignerOrgId": "48a46f29-ae42-4e1d-90dd-c1676c1e5e6d",
"assignerShortName": "JFROG",
"cveId": "CVE-2026-17496",
"datePublished": "2026-07-26T14:33:02.602Z",
"dateReserved": "2026-07-26T14:28:45.607Z",
"dateUpdated": "2026-07-26T14:33:02.602Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-17496\",\"sourceIdentifier\":\"reefs@jfrog.com\",\"published\":\"2026-07-26T15:16:27.710\",\"lastModified\":\"2026-07-26T15:16:27.710\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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).\"}],\"affected\":[{\"source\":\"reefs@jfrog.com\",\"affectedData\":[{\"vendor\":\"codexu\",\"product\":\"NoteGen\",\"defaultStatus\":\"unaffected\",\"collectionURL\":\"https://github.com/codexu/note-gen\",\"packageName\":\"note-gen\",\"programFiles\":[\"src/app/core/main/chat/chat-preview.tsx\"],\"repo\":\"git://github.com/codexu/note-gen\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"0.32.0\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"reefs@jfrog.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N\",\"baseScore\":8.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"reefs@jfrog.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"}]}],\"references\":[{\"url\":\"https://github.com/codexu/note-gen\",\"source\":\"reefs@jfrog.com\"},{\"url\":\"https://github.com/codexu/note-gen/commit/ae3ba948c41d8a74b4a20f4c6f26fcdda2002298\",\"source\":\"reefs@jfrog.com\"},{\"url\":\"https://github.com/codexu/note-gen/releases/tag/note-gen-v0.32.0\",\"source\":\"reefs@jfrog.com\"}]}}"
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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