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Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in plait-board/drawnix

Low
pubuzhixing8 published GHSA-cq57-q8hg-xhxf Sep 14, 2025

Package

npm plait-board/drawnix (npm)

Affected versions

<=0.2.1

Patched versions

v0.3.0

Description

The application contains a critical cross-site scripting (XSS) vulnerability in the debug logging functionality. User-controlled content is
inserted directly into the DOM via innerHTML without any sanitization.

I think the danger of this vulnerability lies in that once a malicious third-party extension is loaded, both local and remote services
(i.e. the drawnix service on your official website) will be affected, and user data will not be protected.

apps/web/src/app/app.tsx

(window as any)['__drawnix__web__console'] = (value: string) => {
addDebugLog(board, value);
};
div.innerHTML = value;

If you want to simply test whether this vulnerability exists, you can enter a verification payload in the browser console interface:

window.__drawnix__web__console('<img src=x onerror=alert("XSS")>');

Severity

Low

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

CVE ID

CVE-2025-58172

Weaknesses

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Learn more on MITRE.

Credits