Vulnerability · Published Jul 2, 2026 · Assigned by VulnCheck

CVE-2025-71385Netdata < 2.3.1 - Reflected Cross-Site Scripting via love Parameter in ilove.svg Endpoint

Medium 6.1

In plain English

A medium-severity cross-site scripting in netdata from netdata. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 3.1)6.1Medium

Exploit odds (30 days)0.4%top 62.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	netdata	no fix listed	DEBIAN-CVE-2025-71385
Ubuntu:24.04:LTS	netdata	no fix listed	UBUNTU-CVE-2025-71385

Affected products (as reported)

Vendor	Product	Versions
netdata	netdata	0 – before 2.3.1

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

Release Notes release-notes
Fix PR issue-tracking
Fix Commit patch
https://www.vulncheck.com/advisories/netdata-reflected-cross-site-scripting-via-love-parameter-in-ilove-svg-endpoint third-party-advisory