Vulnerability Description
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=<script>...</script>; 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Netdata | Netdata | < 2.3.1 |
Related Weaknesses (CWE)
References
- https://github.com/netdata/netdata/commit/f82554fe9b21b5ae51a8663a3f4ddce84cac16Patch
- https://github.com/netdata/netdata/pull/19919Issue TrackingPatch
- https://github.com/netdata/netdata/releases/tag/v2.3.1ProductRelease Notes
- https://www.vulncheck.com/advisories/netdata-reflected-cross-site-scripting-via-PatchRelease NotesThird Party Advisory
FAQ
What is CVE-2025-71385?
CVE-2025-71385 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 ...
How severe is CVE-2025-71385?
CVE-2025-71385 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-71385?
Check the references section above for vendor advisories and patch information. Affected products include: Netdata Netdata.