CVE-2025-71385 PUBLISHED

Netdata < 2.3.1 - Reflected Cross-Site Scripting via love Parameter in ilove.svg Endpoint

Assigner: VulnCheck
Reserved: 01.07.2026 Published: 02.07.2026 Updated: 02.07.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CVSS Score: 5.1

Product Status

Vendor netdata
Product netdata
Versions Default: unaffected
  • affected from 0 to 2.3.1 (excl.)

Credits

  • George Chen finder

References

Problem Types

  • Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE