CVE-2025-63785
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-11-07

Last updated on: 2025-12-08

Assigner: MITRE

Description
A DOM-based Cross-Site Scripting (XSS) vulnerability exists in the text editor feature of the Onlook web application 0.2.32. This vulnerability occurs because user-supplied input is not properly sanitized before being directly injected into the DOM via innerHTML when editing a text element. An attacker can exploit this to inject malicious HTML and script code, which is then executed within the context of the preview iframe, allowing for the execution of arbitrary scripts in the user's session.
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Meta Information
Published
2025-11-07
Last Modified
2025-12-08
Generated
2026-06-16
AI Q&A
2025-11-07
EPSS Evaluated
2026-06-14
NVD
CVE-2025-63785
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
onlook onlook 0.2.32
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 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.
CWE-20 The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
CWE-116 The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.
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Executive Summary

This vulnerability is a DOM-based Cross-Site Scripting (XSS) issue in the text editor feature of the Onlook web application version 0.2.32. It happens because user input is not properly sanitized before being inserted into the DOM using innerHTML when editing text. An attacker can exploit this by injecting malicious HTML or script code, which executes within the preview iframe in the user's session.

Impact Analysis

The vulnerability allows an attacker to execute arbitrary scripts in the context of the user's session within the Onlook web application. This can lead to theft of sensitive information, session hijacking, or performing unauthorized actions on behalf of the user.

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