NoteGen chat preview XSS via unsanitized AI/skill HTML rendering

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-17496
StatePUBLISHED
AssignerJFROG
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-26 15:16:27 UTC
Updated2026-07-26 15:16:27 UTC
DescriptionNoteGen 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).

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Problem Types: CWE-79 | CWE-79 CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
3.1CNACVSS8.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Codexu NoteGen affected 0.32.0 semver Not specified

References

ReferenceSourceLinkTags
github.com/codexu/note-gen/commit/ae3ba948c41d8a74b4a20f4c6f26fcdda2002298 [email protected] github.com
github.com/codexu/note-gen [email protected] github.com
github.com/codexu/note-gen/releases/tag/note-gen-v0.32.0 [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Yuval Moravchick (en)

CNA: JFrog Security Research (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-06-08T00:00:00.000ZVulnerability discovered and PoC verified
CNA2026-07-20T00:00:00.000ZFix released in NoteGen v0.32.0 (Streamdown chat rendering)

Solutions

CNA: 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.

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