CVE-2021-32793CWE-79

Stored XSS Vulnerability in the Pi-hole Webinterface

Medium · published August 4, 2021

CVSS v3.1
5.7
EPSS
1%
Percentile
55.8
In the wild
Unconfirmed
What it is

Pi-hole's Web interface provides a central location to manage a Pi-hole instance and review performance statistics. Prior to Pi-hole Web interface version 5.5.1, the function to add domains to blocklists or allowlists is vulnerable to a stored cross-site-scripting vulnerability. User input added as a wildcard domain to a blocklist or allowlist is unfiltered in the web interface. Since the payload is stored permanently as a wildcard domain, this is a persistent XSS vulnerability. A remote attacker can therefore attack administrative user accounts through client-side attacks. Pi-hole Web Interface version 5.5.1 contains a patch for this vulnerability.

The record
Technical detail
CVSS v3.1
5.7 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00791 · 55.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2021-08-04T17:55Z
EPSS history
Timeline
  • 04 AUG 17:55Z
    Stored XSS Vulnerability in the Pi-hole Webinterface
    cvelistv5