CVE-2021-41836CWE-79

Fathom Analytics <= 3.0.4 Authenticated Stored Cross-Site Scripting

Medium · published December 14, 2021

CVSS v3.1
4.8
EPSS
1%
Percentile
47.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00583 · 47.2th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2021-12-14T15:50Z
EPSS history
Timeline
  • 14 DEC 15:50Z
    Fathom Analytics <= 3.0.4 Authenticated Stored Cross-Site Scripting
    cvelistv5