CVE-2024-34061

Input in parameter notification_urls is not processed resulting in javascript execution in the application

Details

changedetection.io version: v0.45.21

https://github.com/dgtlmoon/changedetection.io/blob/0.45.21/changedetectionio/forms.py#L226

        for server_url in field.data:
            if not apobj.add(server_url):
                message = field.gettext('\'%s\' is not a valid AppRise URL.' % (server_url))
                raise ValidationError(message)

PoC

Setting > ADD Notification URL List

"><img src=x onerror=alert(document.domain)>

Requests

A reflected XSS vulnerability happens when the user input from a URL or POST data is reflected on the page without being stored, thus allowing the attacker to inject malicious content

Untrusted input is rendered as active markup in a victim's browser, which can run script in their session. Typical impact: session or credential theft, and actions taken as the user.

CVE-2024-34061 has a CVSS score of 4.3 (Medium). The vector is network-reachable, no privileges required, and user interaction required. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (0.45.22); upgrading removes the vulnerable code path.

Kodem intelligence

1. What is CVE-2024-34061? CVE-2024-34061 is a medium-severity cross-site scripting (XSS) vulnerability in changedetection.io (pip), affecting versions < 0.45.22. It is fixed in 0.45.22. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.
2. How severe is CVE-2024-34061? CVE-2024-34061 has a CVSS score of 4.3 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of changedetection.io are affected by CVE-2024-34061? changedetection.io (pip) versions < 0.45.22 is affected.
4. Is there a fix for CVE-2024-34061? Yes. CVE-2024-34061 is fixed in 0.45.22. Upgrade to this version or later.
5. Is CVE-2024-34061 exploitable, and should I be worried? Whether CVE-2024-34061 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2024-34061 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2024-34061? Upgrade changedetection.io to 0.45.22 or later.