Bug 2496679 (CVE-2025-71385)

Summary:	CVE-2025-71385 netdata: Netdata: Arbitrary code execution via reflected Cross-Site Scripting
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in Netdata. A remote unauthenticated attacker could exploit a reflected Cross-Site Scripting (XSS) vulnerability in the api/v2/ilove.svg and api/v3/ilove.svg endpoints. By injecting malicious script into the love query parameter, an attacker could trick a victim into executing arbitrary code in their browser, potentially leading to information disclosure or unauthorized actions.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Bug Depends On:	2496744
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Description OSIDB Bzimport 2026-07-02 21:02:42 UTC

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.