PT-2026-55285 · Netdata · Netdata

George Chen · Published 2026-07-02 · Updated 2026-07-02 · CVE-2025-71385

Mitre

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-71385

Affected Products

Netdata

References · 5

• https://github.com/netdata/netdata/commit/f82554fe9b21b5ae51a8663a3f4ddce84cac16af · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2025-71385 · Security Note
• https://github.com/netdata/netdata/pull/19919 · Note
• https://github.com/netdata/netdata/releases/tag/v2.3.1 · Note
• https://vulncheck.com/advisories/netdata-reflected-cross-site-scripting-via-love-parameter-in-ilove-svg-endpoint · Note