CVE-2021-41836

MITTEL 4.8CVE-2021-41836 · Published 14/12/2021 · updated 17/06/2026

Kurz gesagt

CVE-2021-41836 ist eine Schwachstelle (MITTEL (CVSS 4.8)) in fathom analytics (conva).
Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 0.58%, höher als bei 48.1% aller Schwachstellen.
Noch keine gepatchte Version bekannt: Herstellerhinweise unter Referenzen verfolgen.

Package	Affected versions	Patched versions
fathom analytics conva	`≤ 3.0.4`	No fix yet

Description

The Fathom Analytics WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and escaping via the $site_id parameter found in the ~/fathom-analytics.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 3.0.4. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.

References

plugins.trac.wordpress.org/changeset · Patch
wordfence.com/vulnerability-advisories · Third Party Advisory

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