CVE-2026-17496
NoteGen chat preview XSS via unsanitized AI/skill HTML rendering
Description
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).
INFO
Published Date :
July 26, 2026, 3:16 p.m.
Last Modified :
July 26, 2026, 3:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-17496
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 48a46f29-ae42-4e1d-90dd-c1676c1e5e6d | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Enable HTML sanitization for markdown-it.
- Update the markdown-it renderer configuration.
- Avoid using dangerouslySetInnerHTML.
- Implement Content Security Policy.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-17496.
| URL | Resource |
|---|---|
| https://github.com/codexu/note-gen | |
| https://github.com/codexu/note-gen/commit/ae3ba948c41d8a74b4a20f4c6f26fcdda2002298 | |
| https://github.com/codexu/note-gen/releases/tag/note-gen-v0.32.0 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-17496 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-17496
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-17496 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-17496 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Jul. 26, 2026
Action Type Old Value New Value Added Affected [{'repo': 'git://github.com/codexu/note-gen', 'vendor': 'codexu', 'product': 'NoteGen', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '0.32.0', 'versionType': 'semver'}], 'packageName': 'note-gen', 'programFiles': ['src/app/core/main/chat/chat-preview.tsx'], 'collectionURL': 'https://github.com/codexu/note-gen', 'defaultStatus': 'unaffected'}] Added Description 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). Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Added CWE CWE-79 Added Reference https://github.com/codexu/note-gen Added Reference https://github.com/codexu/note-gen/commit/ae3ba948c41d8a74b4a20f4c6f26fcdda2002298 Added Reference https://github.com/codexu/note-gen/releases/tag/note-gen-v0.32.0