Executive brief
Erxes is an experience operating system (XOS) that consolidates marketing, sales, operations, and customer support functions—similar to HubSpot or Zendesk. The application is vulnerable to cross-site scripting (XSS) attacks that allow malicious code to execute in users' browsers when they follow a crafted link, potentially enabling attackers to steal user sessions, deface interfaces, or steal customer data without requiring any authentication.
Technical details
This vulnerability is a reflected or stored cross-site scripting flaw (CWE-79) affecting all versions of Erxes up to and including 1.0.1. The vulnerable code path involves unsanitized user input being rendered in the widget.ejs template (specifically at line 14) and processed by the widgets server index.ts file. The attack requires network access and user interaction—specifically, the victim must visit a malicious link or be redirected to one by a compromised website. An attacker can achieve arbitrary client-side code execution in the victim's browser context. No official patch has been released as of the advisory publication date.
Affected products
- Erxes Erxes up to 1.0.1
Timeline
- 2023-02-21: disclosed