Vulnerability · Published Nov 7, 2023 · Assigned by GitHub_M
CVE-2023-46252Cross-Site Scripting (XSS) via postMessage Handler in Squidex
Medium 6.8
In plain English
A medium-severity cross-site scripting in squidex from Squidex. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities).
Official description
Squidex is an open source headless CMS and content management hub. Affected versions are missing origin verification in a postMessage handler which introduces a Cross-Site Scripting (XSS) vulnerability. The editor-sdk.js file defines three different class-like functions, which employ a global message event listener: SquidexSidebar, SquidexWidget, and SquidexFormField. The registered event listener takes some action based on the type of the received message. For example, when the SquidexFormField receives a message with the type valueChanged, the value property is updated. The SquidexFormField class is for example used in the editor-editorjs.html file, which can be accessed via the public wwwroot folder. It uses the onValueChanged method to register a callback function, which passes the value provided from the message event to the editor.render. Passing an attacker-controlled value to this function introduces a Cross-Site Scripting (XSS) vulnerability.
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L
References
- https://github.com/Squidex/squidex/security/advisories/GHSA-7q4f-fprr-5jw8 x_refsource_CONFIRM