Netdata up to 2.3.0 api/v2/ilove.svg cross site scripting

Summaryinfo

A vulnerability labeled as problematic has been found in Netdata up to 2.3.0. This vulnerability affects unknown code of the file api/v2/ilove.svg. Executing a manipulation can lead to cross site scripting. The identification of this vulnerability is CVE-2025-71385. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic was found in Netdata up to 2.3.0. This vulnerability affects an unknown part of the file api/v2/ilove.svg. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. CVE summarizes:

Netdata before 2.3.1 reflects the user-supplied love query parameter of the api/v2/ilove.svg and api/v3/ilove.svg endpoints verbatim into the generated SVG document (into a text element) without HTML or XML escaping, and serves the response with Content-Type image/svg+xml. An attacker can craft a URL such as /api/v2/ilove.svg?love=...; when a victim navigates to it the injected script executes in the victim browser in the origin of the Netdata instance (reflected cross-site scripting). These endpoints are registered with HTTP_ACL_NOCHECK and anonymous access and, because bearer-token protection is disabled by default, are reachable without authentication on a default Netdata agent. The issue was resolved by removing the ilove endpoint.

The weakness was shared by George Chen. The advisory is available at github.com. This vulnerability was named CVE-2025-71385 since 07/01/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 2.3.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch f82554fe9b21b5ae51a8663a3f4ddce84cac16af is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• Netdata

Version

• 2.0
• 2.1
• 2.2
• 2.3.0

License

• open-source

Website

• Product: https://github.com/netdata/netdata/

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CPE 2.2info

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